diff --git a/flake.nix b/flake.nix
index a8c4ad19ca..9d87effed7 100644
--- a/flake.nix
+++ b/flake.nix
@@ -12,7 +12,7 @@
   outputs = { self, nixpkgs, flake-utils, haskellNix, easy-purescript-nix }:
     let
       supportedSystems = [
-        # "x86_64-linux"
+        "x86_64-linux"
         "x86_64-darwin"
       ];
     in
@@ -25,7 +25,7 @@
           p // { purs = p.purs-0_15_2; };
 
         scripts = import ./nix/scripts.nix {
-          inherit pkgs system easyPS;
+          inherit pkgs easyPS;
           inherit (pkgs.nodePackages) prettier;
         };
         overlays = [
@@ -49,6 +49,7 @@
                   ++
                   (with scripts; [
                     marlowePlaygroundGeneratePurs
+                    startBackend
                   ]
                   )
                   ++
@@ -69,10 +70,17 @@
         ];
         pkgs = import nixpkgs { inherit system overlays; inherit (haskellNix) config; };
         flake = pkgs.playground.flake { };
+        ghc-with-marlowe = pkgs.playground.ghcWithPackages (ps: [ ps.marlowe ]);
       in
-      flake // {
-        legacyPackages = pkgs;
-      });
+      pkgs.lib.recursiveUpdate
+        (flake // {
+          legacyPackages = pkgs;
+        })
+        {
+          packages = { inherit ghc-with-marlowe; };
+        }
+
+    );
 
   # --- Flake Local Nix Configuration ----------------------------
   nixConfig = {
diff --git a/marlowe-playground-client/default.nix b/marlowe-playground-client/default.nix
deleted file mode 100644
index 2f288be707..0000000000
--- a/marlowe-playground-client/default.nix
+++ /dev/null
@@ -1,94 +0,0 @@
-{ pkgs
-, gitignore-nix
-, haskell
-, webCommon
-, webCommonSrc
-, webCommonMarlowe
-, buildPursPackage
-, buildNodeModules
-, filterNpm
-, purs-tidy
-, prettier
-, writeShellScriptBinInRepoRoot
-}:
-let
-  playground-exe = haskell.packages.marlowe-playground-server.components.exes.marlowe-playground-server;
-
-  build-playground-exe = "$(nix-build ../default.nix -A marlowe.haskell.packages.marlowe-playground-server.components.exes.marlowe-playground-server \"$@\")";
-
-  build-ghc-with-marlowe = "$(nix-build --quiet --no-build-output -E '(import ./.. {}).marlowe.haskell.project.ghcWithPackages(ps: [ ps.marlowe ])' \"$@\")";
-
-  # Output containing the purescript bridge code
-  generated-purescript = pkgs.runCommand "marlowe-playground-purescript" { } ''
-    mkdir $out
-    ${playground-exe}/bin/marlowe-playground-server psgenerator $out
-    cp ${builtins.path { name = "tidyrc.json"; path = ../.tidyrc.json; } } $out/.tidyrc.json
-    cp ${builtins.path { name = "tidyoperators"; path = ../.tidyoperators; } } $out/.tidyoperators
-    cd $out
-    ${purs-tidy}/bin/purs-tidy format-in-place $out
-    ${prettier}/bin/prettier -w $out
-    rm $out/.tidyrc.json
-    rm $out/.tidyoperators
-  '';
-
-  generate-purescript = writeShellScriptBinInRepoRoot "marlowe-playground-generate-purs" ''
-    generated=./marlowe-playground-client/generated
-    rm -rf $generated
-    cp -a $(nix-build -A marlowe-playground.generated-purescript --no-out-link "$@") $generated
-    chmod -R +w $generated
-  '';
-
-  # start-backend: script to start the plutus-playground-server
-  #
-  # Note-1: We need to add ghc to the path because the server provides /runghc
-  # which needs ghc and dependencies.
-  # Note-2: We want to avoid to pull the huge closure in so we use $(nix-build) instead
-  start-backend = pkgs.writeShellScriptBin "marlowe-playground-server" ''
-    echo "marlowe-playground-server: for development use only"
-    GHC_WITH_PKGS=${build-ghc-with-marlowe}
-    export PATH=$GHC_WITH_PKGS/bin:$PATH
-    export FRONTEND_URL=https://localhost:8009
-
-    ${build-playground-exe}/bin/marlowe-playground-server webserver
-  '';
-
-  cleanSrc = gitignore-nix.gitignoreSource ./.;
-
-  nodeModules = buildNodeModules {
-    projectDir = filterNpm cleanSrc;
-    packageJson = ./package.json;
-    packageLockJson = ./package-lock.json;
-    githubSourceHashMap = {
-      shmish111.nearley-webpack-loader."939360f9d1bafa9019b6ff8739495c6c9101c4a1" = "1brx669dgsryakf7my00m25xdv7a02snbwzhzgc9ylmys4p8c10x";
-      ankitrohatgi.tarballjs."64ea5eb78f7fc018a223207e67f4f863fcc5d3c5" = "04r9yap0ka4y3yirg0g7xb63mq7jzc2qbgswbixxj8s60k6zdqsm";
-    };
-  };
-
-  build-client = writeShellScriptBinInRepoRoot "marlowe-play-spago" ''
-    cd marlowe-playground-client
-    spago build --purs-args "--strict --stash --censor-lib --stash --is-lib=generated --is-lib=.spago"
-  '';
-
-  client = pkgs.lib.overrideDerivation
-    (buildPursPackage {
-      inherit pkgs nodeModules;
-      src = cleanSrc;
-      checkPhase = ''
-        ${pkgs.nodejs}/bin/npm run test
-      '';
-      name = "marlowe-playground-client";
-      extraSrcs = {
-        web-common-marlowe = webCommonMarlowe;
-        web-common = webCommonSrc;
-      };
-      spagoPackages = pkgs.callPackage ./spago-packages.nix { };
-    })
-    (_: {
-      WEB_COMMON_SRC = webCommon.cleanSrc;
-      WEB_COMMON_MARLOWE_SRC = webCommonMarlowe;
-    });
-in
-{
-  inherit client generated-purescript generate-purescript start-backend build-client;
-  server = playground-exe;
-}
diff --git a/marlowe-playground-client/spago-packages.nix b/marlowe-playground-client/spago-packages.nix
deleted file mode 100644
index 1437ef859d..0000000000
--- a/marlowe-playground-client/spago-packages.nix
+++ /dev/null
@@ -1,1654 +0,0 @@
-# This file was generated by Spago2Nix
-
-{ pkgs ? import <nixpkgs> {} }:
-
-let
-  inputs = {
-
-    "aff" = pkgs.stdenv.mkDerivation {
-        name = "aff";
-        version = "v7.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-contrib/purescript-aff.git";
-          rev = "2d44d9f9d0d6a416a4103fba2fb39e5160f80e36";
-          sha256 = "1d38l16s8hvfqq5w40w21j5089svdiggkraw3rwrl6ml7lijjqx4";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "aff-promise" = pkgs.stdenv.mkDerivation {
-        name = "aff-promise";
-        version = "v4.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/nwolverson/purescript-aff-promise.git";
-          rev = "3aa74e68e3e4c3e38d821375703e0b2f49d831eb";
-          sha256 = "10gv3b05dxnlmr9zmigqs1hz4xqrx7da30aqh12kqg3zrg49k9cc";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "affjax" = pkgs.stdenv.mkDerivation {
-        name = "affjax";
-        version = "v13.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-contrib/purescript-affjax.git";
-          rev = "87a8ffce89a476c1425370eb4b2b7e15408e0d1c";
-          sha256 = "02hd0pfa1lb06a8qg2mqmkhyn3cz8hbvh6r9h2i6xcfqh0r8jg7s";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "affjax-web" = pkgs.stdenv.mkDerivation {
-        name = "affjax-web";
-        version = "v1.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-contrib/purescript-affjax-web.git";
-          rev = "f53a865f4012e4c8bafdd52c6ba39697df68c9d9";
-          sha256 = "0nv43h8w72mr7x469sh3r4qz1zcv7srfyyfar9d00xbdshrvgdnh";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "ansi" = pkgs.stdenv.mkDerivation {
-        name = "ansi";
-        version = "v7.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/hdgarrood/purescript-ansi.git";
-          rev = "7d898732d643a977a78004851112a4417909e126";
-          sha256 = "1aml84m5p1s14kj29m39182byg44nf275p4cinx3kgwhv1gj0qcp";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "argonaut" = pkgs.stdenv.mkDerivation {
-        name = "argonaut";
-        version = "v9.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-contrib/purescript-argonaut.git";
-          rev = "7505a47f2edb0c9cacaac4f11dcedf4723a3e9c8";
-          sha256 = "18yxhlrwri6q858krz1klyq29fx8nvfm16c04wm2rn91mgyasn6x";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "argonaut-codecs" = pkgs.stdenv.mkDerivation {
-        name = "argonaut-codecs";
-        version = "v9.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-contrib/purescript-argonaut-codecs.git";
-          rev = "176a5dddae28fda9a2ff31ed4bf1efcc148513a4";
-          sha256 = "08ys445222syysxh24la8bc8l20lwwqi4vdfa3ph2a60l1lx3kp8";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "argonaut-core" = pkgs.stdenv.mkDerivation {
-        name = "argonaut-core";
-        version = "v7.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-contrib/purescript-argonaut-core.git";
-          rev = "68da81dd80ec36d3b013eff46dc067a972c22e5d";
-          sha256 = "0hxl17ddbflkk0hchjgk5xj6j9fwp3b182w4g073p0dwscdl4f08";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "argonaut-traversals" = pkgs.stdenv.mkDerivation {
-        name = "argonaut-traversals";
-        version = "v10.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-contrib/purescript-argonaut-traversals.git";
-          rev = "8d2403d8d57afb568933dbb36063d5670ce770a0";
-          sha256 = "0v965bcl1hdp1hacbzxcm35kxxclixj0kpsdm816gs7m548z6l43";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "arraybuffer-types" = pkgs.stdenv.mkDerivation {
-        name = "arraybuffer-types";
-        version = "v3.0.2";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-contrib/purescript-arraybuffer-types.git";
-          rev = "9b0b7a0f9ee034e039f3d3a2a9c3f74eb7c9264a";
-          sha256 = "1q3111jk6jj64bxy86lc7ik6q5mgdz87bc086wj5rm57dmlivlxx";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "arrays" = pkgs.stdenv.mkDerivation {
-        name = "arrays";
-        version = "v7.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-arrays.git";
-          rev = "d20bae2f76db6cf29b7b75e26e82b8a54c32295e";
-          sha256 = "1ciz796yrdfnqiskjjhh6r3bn9mks1dm5zin7kwzh1nfy1i4w9pz";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "assert" = pkgs.stdenv.mkDerivation {
-        name = "assert";
-        version = "v6.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-assert.git";
-          rev = "27c0edb57d2ee497eb5fab664f5601c35b613eda";
-          sha256 = "02qpcsijil64qq4kcikv2ynxl85zkryvv0vmzjm6752956ymzi0j";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "avar" = pkgs.stdenv.mkDerivation {
-        name = "avar";
-        version = "v5.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-contrib/purescript-avar.git";
-          rev = "d00f5784d9cc8f079babd62740f5c52b87e5caa5";
-          sha256 = "132g0ccmjr8328xpaycww8b5wmx1vi3li4irxxqcjk5wi47i8c9h";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "bifunctors" = pkgs.stdenv.mkDerivation {
-        name = "bifunctors";
-        version = "v6.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-bifunctors.git";
-          rev = "16ba2fb6dd7f05528ebd9e2f9ca3a068b325e5b3";
-          sha256 = "1qz5aaiq5w4g1rhjb63z47h6nqhw8hw23x1zw5alam047pq4vfkg";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "bigints" = pkgs.stdenv.mkDerivation {
-        name = "bigints";
-        version = "v7.0.1";
-        src = pkgs.fetchgit {
-          url = "https://github.com/sharkdp/purescript-bigints.git";
-          rev = "e73f55b866e437c7bf04c7d262de7c205c47bbca";
-          sha256 = "0msh5sv6g0k69fi0qv4xi1g89bfwai099f0ycjb8a69mnjq8x21n";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "catenable-lists" = pkgs.stdenv.mkDerivation {
-        name = "catenable-lists";
-        version = "v7.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-catenable-lists.git";
-          rev = "09abe1f4888bc00841ad2b59e56a9e7ce7ebd4ab";
-          sha256 = "0fn6caspdnb0nrlj31sy7d5hxrhndfz7a2b9wfkxf5bv5vpjyawb";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "console" = pkgs.stdenv.mkDerivation {
-        name = "console";
-        version = "v6.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-console.git";
-          rev = "3b83d7b792d03872afeea5e62b4f686ab0f09842";
-          sha256 = "0fr5l1myhscp910mybp04cg6g8f2hy3ikjfc8fkqlb2dm2cqzdfs";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "const" = pkgs.stdenv.mkDerivation {
-        name = "const";
-        version = "v6.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-const.git";
-          rev = "ab9570cf2b6e67f7e441178211db1231cfd75c37";
-          sha256 = "0mcpwqqf5bcwxlzk53smvsjjz1ymlnq0ypphg6sc83ibw70g64f6";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "contravariant" = pkgs.stdenv.mkDerivation {
-        name = "contravariant";
-        version = "v6.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-contravariant.git";
-          rev = "9ad3e105b8855bcc25f4e0893c784789d05a58de";
-          sha256 = "1xkd3rfs8v20w7mj6sj6dmhfb2vb1zpmjv245xj1rahk3g16qm7m";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "control" = pkgs.stdenv.mkDerivation {
-        name = "control";
-        version = "v6.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-control.git";
-          rev = "a6033808790879a17b2729e73747a9ed3fb2264e";
-          sha256 = "05sdgywprwpav62d2bvlb80yd39brxhnmhhl1f116mm9hw5clqia";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "coroutines" = pkgs.stdenv.mkDerivation {
-        name = "coroutines";
-        version = "v7.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-contrib/purescript-coroutines.git";
-          rev = "7aa4174c1a981ad0a43dba1d3efad78d76838f5a";
-          sha256 = "0yrycc48901m0vjadh4i4si1crgdjj7w0drmxyqrbv61krc23p8k";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "datetime" = pkgs.stdenv.mkDerivation {
-        name = "datetime";
-        version = "v6.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-datetime.git";
-          rev = "a6a0cf1b0324964ad1854bc3377ed8766ba90e6f";
-          sha256 = "1idjljxy8rjlw3wiypk1c9cc1fc4g9kf7drzdy6a0yjdg7504gad";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "datetime-iso" = pkgs.stdenv.mkDerivation {
-        name = "datetime-iso";
-        version = "a5de49e1e4b75d1731b7ec08e07f94eb6985d452";
-        src = pkgs.fetchgit {
-          url = "https://github.com/input-output-hk/purescript-datetime-iso";
-          rev = "a5de49e1e4b75d1731b7ec08e07f94eb6985d452";
-          sha256 = "0c7hjas2f1iva6z0j7lxn4arpqr4dfi2brndqr1k1wy4gq5zl7nc";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "decimals" = pkgs.stdenv.mkDerivation {
-        name = "decimals";
-        version = "v7.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/sharkdp/purescript-decimals.git";
-          rev = "dfee90a706c44b41b0ef8f5b26d4633323942937";
-          sha256 = "0s64bahw64lc7izhfq42s1imii3fkav8h6v9v4v8ma60g8agqiba";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "distributive" = pkgs.stdenv.mkDerivation {
-        name = "distributive";
-        version = "v6.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-distributive.git";
-          rev = "6005e513642e855ebf6f884d24a35c2803ca252a";
-          sha256 = "0x6cfsx9ff66kvw9l10pxd5vv16r91mmfxrfc68w1xfdfi81lhdx";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "dom-indexed" = pkgs.stdenv.mkDerivation {
-        name = "dom-indexed";
-        version = "v11.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-halogen/purescript-dom-indexed.git";
-          rev = "b462b7391f89cda71d8559cc6f0a49755fae6a99";
-          sha256 = "18h6dafjr6lpcxv69fapyvhghkxkij5fy06m2ybyxj1dj9fh1hmf";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "effect" = pkgs.stdenv.mkDerivation {
-        name = "effect";
-        version = "v4.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-effect.git";
-          rev = "a192ddb923027d426d6ea3d8deb030c9aa7c7dda";
-          sha256 = "0aa10lc6h9mlf4xf3g3ziig7v6kxdqvbh20kma8ay59w0b1bhmj1";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "either" = pkgs.stdenv.mkDerivation {
-        name = "either";
-        version = "v6.1.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-either.git";
-          rev = "af655a04ed2fd694b6688af39ee20d7907ad0763";
-          sha256 = "05zps4klvgmvlm06f4hrycssm8q0pysbqnjsrk26lfvmid6mmg63";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "enums" = pkgs.stdenv.mkDerivation {
-        name = "enums";
-        version = "v6.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-enums.git";
-          rev = "bae47961d401f9acf88da38f32e87403e5f0cf2f";
-          sha256 = "08sl5q07hv6v2008dcpg4mxiqwk9z0fhq67k0bgkxvlbsmar7khg";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "exceptions" = pkgs.stdenv.mkDerivation {
-        name = "exceptions";
-        version = "v6.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-exceptions.git";
-          rev = "afab3c07c820bb49b6c5be50049db46a964a6161";
-          sha256 = "04xrbrcjwsv8gj465ygrlqhv1majxmr6m242iazg6apxlr89hgvg";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "exists" = pkgs.stdenv.mkDerivation {
-        name = "exists";
-        version = "v6.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-exists.git";
-          rev = "f765b4ace7869c27b9c05949e18c843881f9173b";
-          sha256 = "0xnxi8fsmi15wrpq5d99gg94glk8a45hpx7pf4pmxg5r6rn1vjvx";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "filterable" = pkgs.stdenv.mkDerivation {
-        name = "filterable";
-        version = "v5.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-filterable.git";
-          rev = "7c5b8c72779997f2b17d12ce478ff81e7ddda285";
-          sha256 = "1mx4pm8ij1f1vlpw4wrs8gxrw7y6sr9mq5cx1wfx4ks9gs3v765l";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "fixed-points" = pkgs.stdenv.mkDerivation {
-        name = "fixed-points";
-        version = "v7.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-contrib/purescript-fixed-points.git";
-          rev = "2b7f480038a15c707adf49178181cefed167afb2";
-          sha256 = "1iib0yxl749lg4m7ysqmb9aby67a9829x38xc2rma5fk9fv30cw7";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "foldable-traversable" = pkgs.stdenv.mkDerivation {
-        name = "foldable-traversable";
-        version = "v6.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-foldable-traversable.git";
-          rev = "b3926f870532d287ea59e2d5cd3873b81ef2a93a";
-          sha256 = "0xg8qvyc6r9wqgy7wnw1rjqljl4wpgdrkxsm5x9rsagj2k5brxip";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "foreign" = pkgs.stdenv.mkDerivation {
-        name = "foreign";
-        version = "v7.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-foreign.git";
-          rev = "2dd222d1ec7363fa0a0a7adb0d8eaf81bb7006dd";
-          sha256 = "0ycjaal8b2rsg3zl3b7acv166vjfdvziiza3fs8nhfw0rx0xmm1m";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "foreign-object" = pkgs.stdenv.mkDerivation {
-        name = "foreign-object";
-        version = "v4.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-foreign-object.git";
-          rev = "28a635827a9a6c251df73f68874070d51fe9f756";
-          sha256 = "0ql0vgndcb5dqaqz81mvrqkrl5c2rlgxpydgdiiaxmmfxvxwi439";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "fork" = pkgs.stdenv.mkDerivation {
-        name = "fork";
-        version = "v6.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-contrib/purescript-fork.git";
-          rev = "a5c3bc6f357e97669e8c29c6f79f5f55be0d42c0";
-          sha256 = "0yzh55vfrhrr660ni3sbbljypjirbka5jlks4zibqmhwrmy3wnj9";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "form-urlencoded" = pkgs.stdenv.mkDerivation {
-        name = "form-urlencoded";
-        version = "v7.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-contrib/purescript-form-urlencoded.git";
-          rev = "e0e3eebc76f62f2594a0e823e8d6241ca00b2459";
-          sha256 = "1ay946w7gkgqrxxv5qf28w83mh59r1q4j8kk6pndhripz9pby68w";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "formatters" = pkgs.stdenv.mkDerivation {
-        name = "formatters";
-        version = "v7.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-contrib/purescript-formatters.git";
-          rev = "0b4deda4c6664209173e3e21b8fcbc6151a4549c";
-          sha256 = "0z3w5qbfd8z8bakir3rwanq6dcf554f3apacxw5l2vxscvikyra3";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "free" = pkgs.stdenv.mkDerivation {
-        name = "free";
-        version = "v7.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-free.git";
-          rev = "e2d8fa8023a864363857834e11393483bced5e38";
-          sha256 = "0gyy0k297m26gw76w7kx8k1zjczlqbqb3nmh2h4gb3r84gl05g6r";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "freeap" = pkgs.stdenv.mkDerivation {
-        name = "freeap";
-        version = "v7.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/ethul/purescript-freeap.git";
-          rev = "b45a39b085777010818a87bf2ed6e7e430215c97";
-          sha256 = "1kksw5fhiczbkd702d3kpy5l9i8q8is60xw51kk9rk9vbc8s1cwl";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "freet" = pkgs.stdenv.mkDerivation {
-        name = "freet";
-        version = "v7.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-contrib/purescript-freet.git";
-          rev = "21be6fba22599a25812430dda6ba2ca8135920a1";
-          sha256 = "006wbr7f19k7vs1jg4wgkwyx1q4wvvs2wqscfcxsp8fzfpn2yqw8";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "functions" = pkgs.stdenv.mkDerivation {
-        name = "functions";
-        version = "v6.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-functions.git";
-          rev = "f626f20580483977c5b27a01aac6471e28aff367";
-          sha256 = "1bsf2y8hx103a92yrc6m05q2dv51ckag1srd7q5n9vaf2k9byrj9";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "functors" = pkgs.stdenv.mkDerivation {
-        name = "functors";
-        version = "v5.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-functors.git";
-          rev = "022ffd7a2a7ec12080314f3d217b400674a247b4";
-          sha256 = "1pnw3r1nk0rx8mrw3ajjml40zvx9v26qrqwj77pz7hpwxigxfbff";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "gen" = pkgs.stdenv.mkDerivation {
-        name = "gen";
-        version = "v4.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-gen.git";
-          rev = "9fbcc2a1261c32e30d79c5418edef4d96fe76931";
-          sha256 = "0kajzcp9a8dmqvb3ga27hlf18m2smbp98a0bmzzb9vv156ckw0b4";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "halogen" = pkgs.stdenv.mkDerivation {
-        name = "halogen";
-        version = "v7.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-halogen/purescript-halogen.git";
-          rev = "222e1febc889c64a71013748b6bf04db969888f9";
-          sha256 = "1y0jxnyav8wv49zwmimfbcp6niyz25mxh2spn6kfh9bfhrpfd36d";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "halogen-hooks" = pkgs.stdenv.mkDerivation {
-        name = "halogen-hooks";
-        version = "v0.6.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/thomashoneyman/purescript-halogen-hooks.git";
-          rev = "cbbf5658f3855d84f81227c88f80d484454421f2";
-          sha256 = "11kq6220f0b77lici6mrr23xmra9ld3vzmxa05qaignvw2nn3855";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "halogen-hooks-extra" = pkgs.stdenv.mkDerivation {
-        name = "halogen-hooks-extra";
-        version = "v0.9.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/jordanmartinez/purescript-halogen-hooks-extra.git";
-          rev = "575b38a7d5839aa88b844ccfc491f4dbe861d794";
-          sha256 = "134r2sv1nk02hk0rcarcprcd7c9qc4bxm51dic7gz4r9hqijc4fr";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "halogen-subscriptions" = pkgs.stdenv.mkDerivation {
-        name = "halogen-subscriptions";
-        version = "v2.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-halogen/purescript-halogen-subscriptions.git";
-          rev = "a41a63a18b2bc7c7c12eb2afc0c3e4276eecd233";
-          sha256 = "0ljkjmz526yjcfzil1n1fq5yichs38dy64y3fmkz302hk6gsgz3x";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "halogen-vdom" = pkgs.stdenv.mkDerivation {
-        name = "halogen-vdom";
-        version = "v8.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-halogen/purescript-halogen-vdom.git";
-          rev = "e6630023500841d910f6690fa1bc6ba649ac6f15";
-          sha256 = "0d2hpyrai825ynpl5yf5kzvh47bj3xw7iml2vl6pvkczbycnl5l8";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "heterogeneous" = pkgs.stdenv.mkDerivation {
-        name = "heterogeneous";
-        version = "v0.6.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/natefaubion/purescript-heterogeneous.git";
-          rev = "5b7542bdd9547c5aef95b8878f103f0ce4ee1383";
-          sha256 = "0ff1wjq2ayhy67ydggbb2qlzbhvmv1m1z8dcp48p9zhxiq9fpfsz";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "http-methods" = pkgs.stdenv.mkDerivation {
-        name = "http-methods";
-        version = "v6.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-contrib/purescript-http-methods.git";
-          rev = "99b48d54b978e4e6438d850015d59e57ac64824e";
-          sha256 = "126x1cqr1769a3yzigpp8sp33n6s4fadai7w30mb2nk9dbxy0hw5";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "identity" = pkgs.stdenv.mkDerivation {
-        name = "identity";
-        version = "v6.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-identity.git";
-          rev = "ef6768f8a52ab0bc943a85f5761ba07c257f639f";
-          sha256 = "1lh0pkwwdyd8q9bgf4l1m96gdnardki4r2s359cnhrwp94b43fyr";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "infinite-lists" = pkgs.stdenv.mkDerivation {
-        name = "infinite-lists";
-        version = "v3.2.0";
-        src = pkgs.fetchgit {
-          url = "https://git@github.com/Thimoteus/purescript-infinite-lists";
-          rev = "9cfc3962c521454da7c4c928fe0718243f31d784";
-          sha256 = "0zblzpkah6a6nj0s323hp4p1z1vyr26s8qh2cxhk0jriswdn00qf";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "integers" = pkgs.stdenv.mkDerivation {
-        name = "integers";
-        version = "v6.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-integers.git";
-          rev = "54d712b25c594833083d15dc9ff2418eb9c52822";
-          sha256 = "04j9sqvkgyxxvbm8jfc2118wzmgswn8jva9fysgbsnmsg9vcxfm6";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "invariant" = pkgs.stdenv.mkDerivation {
-        name = "invariant";
-        version = "v6.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-invariant.git";
-          rev = "1d2a196d51e90623adb88496c2cfd759c6736894";
-          sha256 = "07rqag47ykdiqc5yfbc1a64ijaqliljhcw1vgbv81m7ljzzd2xna";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "js-date" = pkgs.stdenv.mkDerivation {
-        name = "js-date";
-        version = "v8.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-contrib/purescript-js-date.git";
-          rev = "1ea020316946cc4b87195bca9c54d0c16abaa490";
-          sha256 = "03535g8hc4bzyzig25hf75dls9ypsgrdk2nc45h8zw4xyy4ha0gz";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "js-object" = pkgs.stdenv.mkDerivation {
-        name = "js-object";
-        version = "73db55f89744b032f44c9ec49804f46e3ee63ed7";
-        src = pkgs.fetchgit {
-          url = "https://git@github.com/paluh/purescript-js-object";
-          rev = "73db55f89744b032f44c9ec49804f46e3ee63ed7";
-          sha256 = "0zcq2cqwd5ixhjq2y11zniv61qcv5a3w14jd9hhpcn9gx6rb4gsp";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "js-timers" = pkgs.stdenv.mkDerivation {
-        name = "js-timers";
-        version = "v6.1.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-contrib/purescript-js-timers.git";
-          rev = "7cb728b3e6dc29f355143617e6e9ac770ecd9273";
-          sha256 = "0dm933kqhwgmpkylgrlpjplidn8biic8jlzs4l4nny4a1z20mr61";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "js-uri" = pkgs.stdenv.mkDerivation {
-        name = "js-uri";
-        version = "v3.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-contrib/purescript-js-uri.git";
-          rev = "ac659740288de7c5e64166dbfda9d4985c5044b7";
-          sha256 = "013aq6md3qija1hz6ynr17z1wvi2j844xh992j27bgjsd07r2309";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "json-helpers" = pkgs.stdenv.mkDerivation {
-        name = "json-helpers";
-        version = "0ff78186a949722f37218046a09abdf27d77ecfe";
-        src = pkgs.fetchgit {
-          url = "https://github.com/input-output-hk/purescript-bridge-json-helpers.git";
-          rev = "0ff78186a949722f37218046a09abdf27d77ecfe";
-          sha256 = "1j43ck2hp4d64r1c6py5kimimlw0cli1alfaffnqlqmqg3d8pfbz";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "lazy" = pkgs.stdenv.mkDerivation {
-        name = "lazy";
-        version = "v6.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-lazy.git";
-          rev = "48347841226b27af5205a1a8ec71e27a93ce86fd";
-          sha256 = "0dxlc3b2bdqsri45i7a9bvwvv0gg43cc1gq61zi41f290a29ny2q";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "lcg" = pkgs.stdenv.mkDerivation {
-        name = "lcg";
-        version = "v4.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-lcg.git";
-          rev = "67c6c6483a563a59ae036d9dca0f1be2835326a5";
-          sha256 = "1shzn6zvc1cxd7v0bvfsk7x3xf59vxby8c5lfjvd746r6396zn65";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "lists" = pkgs.stdenv.mkDerivation {
-        name = "lists";
-        version = "v7.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-lists.git";
-          rev = "b113451e5b41cad87d669a3165f955c71cd863e2";
-          sha256 = "1mg7vy44k8jlqkri7x4ikciixx92b17wi35887x09dwdsicjf0sx";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "markdown" = pkgs.stdenv.mkDerivation {
-        name = "markdown";
-        version = "3c5536d5cad663c0912bae89205dd1c8934d525b";
-        src = pkgs.fetchgit {
-          url = "https://github.com/input-output-hk/purescript-markdown";
-          rev = "3c5536d5cad663c0912bae89205dd1c8934d525b";
-          sha256 = "0d8425j6mkg6nw5f5qc54rkgd7n35ylrb463j9xfi4jxmhg238ng";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "marlowe" = pkgs.stdenv.mkDerivation {
-        name = "marlowe";
-        version = "1f5d5606c2deced2363a69a76a1a24a052618c67";
-        src = pkgs.fetchgit {
-          url = "https://github.com/input-output-hk/purescript-marlowe";
-          rev = "1f5d5606c2deced2363a69a76a1a24a052618c67";
-          sha256 = "10xjxdi86gdx8zpyjhhk15fc3llhr9znl7jjxj5am9ffkxrqn63i";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "maybe" = pkgs.stdenv.mkDerivation {
-        name = "maybe";
-        version = "v6.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-maybe.git";
-          rev = "c6f98ac1088766287106c5d9c8e30e7648d36786";
-          sha256 = "0n33g8c579vcs06ii0r7f14jjdwzjw7p583w4nmrv9h442q2cvlz";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "media-types" = pkgs.stdenv.mkDerivation {
-        name = "media-types";
-        version = "v6.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-contrib/purescript-media-types.git";
-          rev = "af853de226592f319a953637069a943dd261cba3";
-          sha256 = "0bxpsd2yw3zg58ay649v3xld7n17n7j7n9y8l841cjih9bc7ccxx";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "mmorph" = pkgs.stdenv.mkDerivation {
-        name = "mmorph";
-        version = "v7.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/Thimoteus/purescript-mmorph.git";
-          rev = "94bc558ac34184d5236a7a9b2463dcc7551ced8e";
-          sha256 = "0m3m1kjy4i9lwzj8l5qlafxawyhbdxj035wa5ys4j8v4013a92xg";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "newtype" = pkgs.stdenv.mkDerivation {
-        name = "newtype";
-        version = "v5.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-newtype.git";
-          rev = "29d8e6dd77aec2c975c948364ec3faf26e14ee7b";
-          sha256 = "0kfc644zn2f9rpx8fy4gjvmz04k9mv1c2xrqis8m3s0ydnhbffd7";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "node-buffer" = pkgs.stdenv.mkDerivation {
-        name = "node-buffer";
-        version = "v8.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-node/purescript-node-buffer.git";
-          rev = "7be7bd082b7d3e15de2ed5a626d43af746bdb35e";
-          sha256 = "1l1j4ml0lyhnxs1zcy3jchlc0mbsn40g1pxyb4lv6slhp0qdhjhp";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "node-fs" = pkgs.stdenv.mkDerivation {
-        name = "node-fs";
-        version = "v8.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-node/purescript-node-fs.git";
-          rev = "7dfc7cad919cec097d40c8fce611338715969f75";
-          sha256 = "0892d8d81czrh61w8zd5k48jzc5s6wkf3k5c033igqjbksxa114s";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "node-path" = pkgs.stdenv.mkDerivation {
-        name = "node-path";
-        version = "v5.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-node/purescript-node-path.git";
-          rev = "d5f08cfde829b831408c4c6587cec83f2cd6a58e";
-          sha256 = "1d38ipij4lb1nq8wkv7kmpk77z5ac0spfc89hfc9yn6jnscl6sky";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "node-streams" = pkgs.stdenv.mkDerivation {
-        name = "node-streams";
-        version = "v7.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-node/purescript-node-streams.git";
-          rev = "8395652f9f347101fe042f58726edc592ae5086c";
-          sha256 = "1cgkh3dwnhv90r7dak3x4dq698gh30ghfxncrw0ngwrv5pismn0x";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "nonempty" = pkgs.stdenv.mkDerivation {
-        name = "nonempty";
-        version = "v7.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-nonempty.git";
-          rev = "28150ecc7419238b187abd609a92a645273348bb";
-          sha256 = "1mwdc2sny2ygp67kyk7h2493vq7syf7j18s3d9a5gwf1y7jlf7gh";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "now" = pkgs.stdenv.mkDerivation {
-        name = "now";
-        version = "v6.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-contrib/purescript-now.git";
-          rev = "b5ffed2381e5fefc063f484e607e8499e79eaf32";
-          sha256 = "01khmqs4iz7dhlvd43zxj19q0c0vvqf1m128vgvgxz5mv430zfgr";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "nullable" = pkgs.stdenv.mkDerivation {
-        name = "nullable";
-        version = "v6.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-contrib/purescript-nullable.git";
-          rev = "3202744c6c65e8d1fbba7f4256a1c482078e7fb5";
-          sha256 = "10s3b54pjmr2rxlyzvc8yc99k1dpn0qrijnc4y65yj5z6bxf2791";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "numbers" = pkgs.stdenv.mkDerivation {
-        name = "numbers";
-        version = "v9.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-numbers.git";
-          rev = "2a53528f18f9415334bae28e7bb3cf3be86342c2";
-          sha256 = "1h4v6ir1hq6gvkk0kla38vlcd6bv73xkc8pv71jygwqxrdwfxxgw";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "ordered-collections" = pkgs.stdenv.mkDerivation {
-        name = "ordered-collections";
-        version = "v3.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-ordered-collections.git";
-          rev = "9826b7632d0d0a691173bde308a634195f42a419";
-          sha256 = "1wk8mcn1zsxi0yk9ybas2v7m0drb492806gld1xxxic8x1i19ws0";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "orders" = pkgs.stdenv.mkDerivation {
-        name = "orders";
-        version = "v6.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-orders.git";
-          rev = "f86db621ec5eef1274145f8b1fd8ebbfe0ed4a2c";
-          sha256 = "14fjls3v14ia6fr2w4p0i5dqv10zk343wg28m4c77a17jmvbs9r4";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "parallel" = pkgs.stdenv.mkDerivation {
-        name = "parallel";
-        version = "v6.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-parallel.git";
-          rev = "85290dca837771ac4870071008c933d315ef678f";
-          sha256 = "0bpwvzq4dn7vx5mfj12w1zvvnamc6w2c45c2v54b9yw36snnwpcf";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "parsing" = pkgs.stdenv.mkDerivation {
-        name = "parsing";
-        version = "v9.1.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-contrib/purescript-parsing.git";
-          rev = "44ef16b7cfb7cedc3d518c00ef10c6cb73ff4fc8";
-          sha256 = "1wkk3p1w2k1cvby4airyxgavk1djfzvzc2ch6b8951b592rj8lkr";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "partial" = pkgs.stdenv.mkDerivation {
-        name = "partial";
-        version = "v4.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-partial.git";
-          rev = "0fa0646f5ea1ec5f0c46dcbd770c705a6c9ad3ec";
-          sha256 = "04s1h0r3slyd8kcamhqqrr6piksl9y76nmf2418j0ifhp16qwxmm";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "pipes" = pkgs.stdenv.mkDerivation {
-        name = "pipes";
-        version = "v8.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/felixschl/purescript-pipes.git";
-          rev = "e3bdc0b0db0a67e89a717b6118b23e78a380e23f";
-          sha256 = "1jz3bfbl8b0hgbcm9y98bv2z29b072v1k8snp19vb2xql1zd40sx";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "precise" = pkgs.stdenv.mkDerivation {
-        name = "precise";
-        version = "v6.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-contrib/purescript-precise.git";
-          rev = "37a6a4ffd0ab6f029cc6432f69bd3deb3b92eafd";
-          sha256 = "1lvx109hlhkv2dk0hr0ajmqhvd0jiqpw0k49sk8sk4hs02p2p9q9";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "prelude" = pkgs.stdenv.mkDerivation {
-        name = "prelude";
-        version = "v6.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-prelude.git";
-          rev = "32787f4399c92459c41602131a5858559eb868c5";
-          sha256 = "0jkbckxw2640gmfi2f8bpf2zwnay2dxy8n24rvxl3w3dihcgd9qc";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "profunctor" = pkgs.stdenv.mkDerivation {
-        name = "profunctor";
-        version = "v6.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-profunctor.git";
-          rev = "0a966a14e7b0c827d44657dc1710cdc712d2e034";
-          sha256 = "07rhk8micbc74my6s53xbj2smvvwah2w1drqrcmcnncxdks3lqg3";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "profunctor-lenses" = pkgs.stdenv.mkDerivation {
-        name = "profunctor-lenses";
-        version = "v8.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-contrib/purescript-profunctor-lenses.git";
-          rev = "973d567afe458fd802cf4f0d9725b6dc35ad9297";
-          sha256 = "0axz7nznn12iqh6sn9qjg6i8qglpdsqgkp30ndwdj98czcnbnybv";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "psci-support" = pkgs.stdenv.mkDerivation {
-        name = "psci-support";
-        version = "v6.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-psci-support.git";
-          rev = "897cdb543548cb6078d69b6413b54841404eda72";
-          sha256 = "1ix53r8avkn3fw72mngwzw7v6c6mv7j4miw5mrgjrh9hb8p2ydl1";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "quickcheck" = pkgs.stdenv.mkDerivation {
-        name = "quickcheck";
-        version = "v8.0.1";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-quickcheck.git";
-          rev = "bf5029f97e6c0d7552d3a08d2ab793a19e2c5e3d";
-          sha256 = "142dvh57fl8b6i7mm37a38v7vkc1znbqz6l6wqa704m53hkikvyd";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "quickcheck-laws" = pkgs.stdenv.mkDerivation {
-        name = "quickcheck-laws";
-        version = "v7.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-contrib/purescript-quickcheck-laws.git";
-          rev = "04f00fb78d88f38a2f2bb73b75f97ce5bf5624fc";
-          sha256 = "0izp71wq253k9wih2hspfs4p1s36yins2a5mh13yl57pf1srbrky";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "random" = pkgs.stdenv.mkDerivation {
-        name = "random";
-        version = "v6.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-random.git";
-          rev = "9540bc965a9596da02fefd9949418bb19c92533a";
-          sha256 = "0qz14qviz5053j9h1jwpk0gnn692hcdx6fp90wckzrnw31d53174";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "record" = pkgs.stdenv.mkDerivation {
-        name = "record";
-        version = "v4.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-record.git";
-          rev = "c89cd1ada6b636692571fc374196b1c39c4c9f70";
-          sha256 = "1g7s2h1as5cz824wpm0jhjprrh66shha5i4gq37q73yw0s5p2ahm";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "refs" = pkgs.stdenv.mkDerivation {
-        name = "refs";
-        version = "v6.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-refs.git";
-          rev = "f8e6216da4cb9309fde1f20cd6f69ac3a3b7f9e8";
-          sha256 = "09bvfxhjfwfwv55py45s71maazwrr68k0rk4v8ynfqv91h34319h";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "remotedata" = pkgs.stdenv.mkDerivation {
-        name = "remotedata";
-        version = "v5.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/krisajenkins/purescript-remotedata.git";
-          rev = "cc9932a6c19262d8e4217c534c658a127562c14c";
-          sha256 = "1kr4wbsqd3kaf8c4w13m988602qvcm3262v0aij01jrms4p1x92q";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "routing" = pkgs.stdenv.mkDerivation {
-        name = "routing";
-        version = "v11.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-contrib/purescript-routing.git";
-          rev = "255ec9ada5ceb6e6e0e02f71a767cf86064165c0";
-          sha256 = "0z915cgwdq8q3rsy6v6il4lqhkk3xr5mc7zfdyd6rgdjhmr7qiv7";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "routing-duplex" = pkgs.stdenv.mkDerivation {
-        name = "routing-duplex";
-        version = "v0.6.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/natefaubion/purescript-routing-duplex.git";
-          rev = "f4430e60d6519b5c43a888cf153dddee0cbc2946";
-          sha256 = "0p5rsvbi5jy52yldyibrjgkbspnzc1ixp4jndf3jv15s90mim0xs";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "safe-coerce" = pkgs.stdenv.mkDerivation {
-        name = "safe-coerce";
-        version = "v2.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-safe-coerce.git";
-          rev = "7fa799ae80a38b8d948efcb52608e58e198b3da7";
-          sha256 = "00m4l733gpl0153cbl6n5kly7jr8ids399apza2rbczif40brp9g";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "semirings" = pkgs.stdenv.mkDerivation {
-        name = "semirings";
-        version = "v7.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-semirings.git";
-          rev = "e862c970483feff7dacdf6db5be5a84ea754fd63";
-          sha256 = "0j0nr1kqgm2zgxfpzzmcpxl60mncq497mhkfxmkmz1kv4ix1zyra";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "servant-support" = pkgs.stdenv.mkDerivation {
-        name = "servant-support";
-        version = "61f85eb0657196d4bfc80ae4736d6a6d9ebd4529";
-        src = pkgs.fetchgit {
-          url = "https://github.com/input-output-hk/purescript-servant-support";
-          rev = "61f85eb0657196d4bfc80ae4736d6a6d9ebd4529";
-          sha256 = "1y2x4qfrfnwsnk3h8nl1sf1xjhc7ans3dn5dvvkf6cpxjrc8i73p";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "simple-json" = pkgs.stdenv.mkDerivation {
-        name = "simple-json";
-        version = "v9.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/justinwoo/purescript-simple-json.git";
-          rev = "b85e112131240ff95b5c26e9abb8e2fa6db3c656";
-          sha256 = "1k78zm7cq4yf65a1yrw7vqnflrnvm45b3jsxxk5vwcrzdlfrbxad";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "spec" = pkgs.stdenv.mkDerivation {
-        name = "spec";
-        version = "v7.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-spec/purescript-spec.git";
-          rev = "e7d976e3562e0d0c1d3b4cf51fb9b53957a8e157";
-          sha256 = "1l70bidnscfsaj9fsfl7vxslp7sl633273ijm9219cjsrnhm55ky";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "spec-quickcheck" = pkgs.stdenv.mkDerivation {
-        name = "spec-quickcheck";
-        version = "v5.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-spec/purescript-spec-quickcheck.git";
-          rev = "c83de337db1f74ff75e0d7c574a2f7407bc5f2b2";
-          sha256 = "1y9rzb8kbahhchplswdxrjqm4qjkv1bnv9mzg8v62m1ipk3kdndj";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "st" = pkgs.stdenv.mkDerivation {
-        name = "st";
-        version = "v6.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-st.git";
-          rev = "2cc7ae1c3318a303378c4a9f3fa0f10ee7cc3589";
-          sha256 = "1ykk27zn03svfsv2s1mf88d6x3q6qhb9bwjzgals79krw8w0aiyl";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "strings" = pkgs.stdenv.mkDerivation {
-        name = "strings";
-        version = "v6.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-strings.git";
-          rev = "4bc6954448d056f8aa7a659695a6ad60ad4fdf19";
-          sha256 = "101va3rawcn5inp20krfg192bbjbvm27xfzwwc1inb2ya0m98amg";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "tailrec" = pkgs.stdenv.mkDerivation {
-        name = "tailrec";
-        version = "v6.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-tailrec.git";
-          rev = "5e2104aa734b31a17074cc805bf087d72b65afd1";
-          sha256 = "0vc3dpsd2xxz694zlm75nx1cn6c6f29nzkb8xlxkk6ydw3wpsk3w";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "these" = pkgs.stdenv.mkDerivation {
-        name = "these";
-        version = "v6.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-contrib/purescript-these.git";
-          rev = "ad4de7d2bb9ce684a9dff5def6489630736985b8";
-          sha256 = "1i73qz7pk11mbiymhfg21i3nq92hqjmqzj4gjp1n6l2zkm0lmql3";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "transformers" = pkgs.stdenv.mkDerivation {
-        name = "transformers";
-        version = "v6.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-transformers.git";
-          rev = "be72ab52357d9a665cbf93d73ba1c07c4b0957ee";
-          sha256 = "0ijrdsppl8vx0rlbwc9p0vjbmvwlcy4ia7xymvk6y34zbxzjlzm6";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "tuples" = pkgs.stdenv.mkDerivation {
-        name = "tuples";
-        version = "v7.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-tuples.git";
-          rev = "4f52da2729b448c8564369378f1232d8d2dc1d8b";
-          sha256 = "1m1ng0xxicb73945jymcl1hn2y2hmynlnmhb2k0kkn1jrjwgcc3d";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "type-equality" = pkgs.stdenv.mkDerivation {
-        name = "type-equality";
-        version = "v4.0.1";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-type-equality.git";
-          rev = "0525b7d39e0fbd81b4209518139fb8ab02695774";
-          sha256 = "1ass38jdycsjisdimdc4drg2w8vkkwp6lkvz3kvy7q0h98vdmlbr";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "typelevel-prelude" = pkgs.stdenv.mkDerivation {
-        name = "typelevel-prelude";
-        version = "v7.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-typelevel-prelude.git";
-          rev = "dca2fe3c8cfd5527d4fe70c4bedfda30148405bf";
-          sha256 = "0x86mrg33kpnrnsfp4p3c92j5lpyqzy87bxdynwf7smk3inqr2jc";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "undefined-or" = pkgs.stdenv.mkDerivation {
-        name = "undefined-or";
-        version = "5822ab71acc9ed276afd6fa96f1cb3135e376719";
-        src = pkgs.fetchgit {
-          url = "https://github.com/CarstenKoenig/purescript-undefined-or.git";
-          rev = "5822ab71acc9ed276afd6fa96f1cb3135e376719";
-          sha256 = "152b2cfakg3inqcq5dfr70q8ngw3sbpx1fz9krvjjy7mmd9mw431";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "unfoldable" = pkgs.stdenv.mkDerivation {
-        name = "unfoldable";
-        version = "v6.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-unfoldable.git";
-          rev = "493dfe04ed590e20d8f69079df2f58486882748d";
-          sha256 = "15z2k639ph8wdkrc2y838m5am1z7szw2vqymmv021skzisyn7zwf";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "unicode" = pkgs.stdenv.mkDerivation {
-        name = "unicode";
-        version = "v6.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-contrib/purescript-unicode.git";
-          rev = "6454d59d9e1fd1bc5a72e80e985d8282022a567a";
-          sha256 = "0w2gsmqcy7pj5vd22qzpig20bdgzmbagyqxrg9mm1njjfsmcm8cv";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "unordered-collections" = pkgs.stdenv.mkDerivation {
-        name = "unordered-collections";
-        version = "v3.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/fehrenbach/purescript-unordered-collections.git";
-          rev = "6fb203af23c9910ca6776d0673a0256690e0fbcd";
-          sha256 = "1cip31vx9v060hrn78gxlzkwkfgz75si50m19h2w2vdnv3v64nwh";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "unsafe-coerce" = pkgs.stdenv.mkDerivation {
-        name = "unsafe-coerce";
-        version = "v6.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-unsafe-coerce.git";
-          rev = "ab956f82e66e633f647fb3098e8ddd3ec58d689f";
-          sha256 = "0r6d3dx8jalfzvrvkagz9v05yxwkkhgbzlpswg4w1cyl03zjcla4";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "unsafe-reference" = pkgs.stdenv.mkDerivation {
-        name = "unsafe-reference";
-        version = "v5.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-contrib/purescript-unsafe-reference.git";
-          rev = "058e23b8b9adcf776a910f9934ff515ddee73af5";
-          sha256 = "07793ijx8vv9rac0yqkxzh5djckhslcy16cm8k0lgjl6bc9mwgra";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "uri" = pkgs.stdenv.mkDerivation {
-        name = "uri";
-        version = "v9.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-contrib/purescript-uri.git";
-          rev = "6cb335da26c61dad7021281bdc7e4ac5136200fe";
-          sha256 = "05zf018s2zjd52dl5qyq9b6804yr0cw0dmqzd2klfwmdv6p4rnl3";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "uuid" = pkgs.stdenv.mkDerivation {
-        name = "uuid";
-        version = "v9.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/megamaddu/purescript-uuid.git";
-          rev = "69128690b8686e3f819f1e107a960509664bca3f";
-          sha256 = "0msj229spkf5pg5yq0b3yxdjzb836c5nfng9h36vrgczd2n6gamn";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "validation" = pkgs.stdenv.mkDerivation {
-        name = "validation";
-        version = "v6.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript/purescript-validation.git";
-          rev = "a3d9ec2176a7a808d70a01fa7e6f16d10e05429a";
-          sha256 = "0i11y3qqarp6gkj6af4x8idaiq9sva8ajykpdxbbgmb79vlfyrn1";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "variant" = pkgs.stdenv.mkDerivation {
-        name = "variant";
-        version = "v8.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/natefaubion/purescript-variant.git";
-          rev = "8b2bd73a4202257d80a955c4dd36f6055f149823";
-          sha256 = "18nyxnaqqg1zzydwd2hh9hbzr31j509g5yb1lnd0m60bma4l9h5g";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "web-clipboard" = pkgs.stdenv.mkDerivation {
-        name = "web-clipboard";
-        version = "v4.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-web/purescript-web-clipboard.git";
-          rev = "eded8dd18090c4d0938c2e51ad7407897811d32f";
-          sha256 = "1nr7mdrbpfr3k5m87hnrfqz69kslvyiflgw8j78cw475ahsm28z0";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "web-dom" = pkgs.stdenv.mkDerivation {
-        name = "web-dom";
-        version = "v6.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-web/purescript-web-dom.git";
-          rev = "568a1ee158b29e6e739e7a9aaed3e35ca4c4305a";
-          sha256 = "0angs86ld0h3ld889ag55lh62101dfn3fknyqrfv0imgn40vwm44";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "web-events" = pkgs.stdenv.mkDerivation {
-        name = "web-events";
-        version = "v4.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-web/purescript-web-events.git";
-          rev = "2124356117be7b764a2f3948032255ac4dab7051";
-          sha256 = "0l47gsgj71x0gjbhjqwsar2y44ljhq3xa0nkgr1qvqxmcm00llqf";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "web-file" = pkgs.stdenv.mkDerivation {
-        name = "web-file";
-        version = "v4.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-web/purescript-web-file.git";
-          rev = "023786ae62bbb8bf58156dd7f02011fa38221ef1";
-          sha256 = "1wjf1m5y2qsba83is297icv9zyl7jilxdga0192mm1rp0j16jjln";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "web-html" = pkgs.stdenv.mkDerivation {
-        name = "web-html";
-        version = "v4.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-web/purescript-web-html.git";
-          rev = "be189cf91b9a19cf493637423522e2fe4a0088cc";
-          sha256 = "0yspv6sci3mkflvqwf5jvz3a8nclmhbvazx9n34acyj3aai7k6bs";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "web-pointerevents" = pkgs.stdenv.mkDerivation {
-        name = "web-pointerevents";
-        version = "v1.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-web/purescript-web-pointerevents.git";
-          rev = "cf1f48dda73ea34f81a769809489806fce0cac40";
-          sha256 = "1yswmb81vpj2nhb5ibiddih3zk8kwg1rpymq6jydqawrhdzwz8z7";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "web-socket" = pkgs.stdenv.mkDerivation {
-        name = "web-socket";
-        version = "v4.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-web/purescript-web-socket.git";
-          rev = "9d37be740d9c99449ddb4ca5de8a0339e4ae1f55";
-          sha256 = "0iqymasryrfd7rnkbg0m23c879r18qvy64nkf4yhgmdm26sf5vxa";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "web-storage" = pkgs.stdenv.mkDerivation {
-        name = "web-storage";
-        version = "v5.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-web/purescript-web-storage.git";
-          rev = "6b74461e136755db70c271dc898d51776363d7e2";
-          sha256 = "0q1grh8cp6h1szsqg3xmwlzrc1bbz8yzlwxlcl1iym5mjiyzgkcs";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "web-touchevents" = pkgs.stdenv.mkDerivation {
-        name = "web-touchevents";
-        version = "v4.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-web/purescript-web-touchevents.git";
-          rev = "53feadd58661b6a8bce673f4a1da4a6436cbbb24";
-          sha256 = "1897hz57myik4p0nr18z18wagv0qk67capa76nrdqpmkm58f20h8";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "web-uievents" = pkgs.stdenv.mkDerivation {
-        name = "web-uievents";
-        version = "v4.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-web/purescript-web-uievents.git";
-          rev = "091ad1b092dee27ec9bcbaad84bb34c4218026df";
-          sha256 = "1dj52fn9nx7qk8i22kyss2xjwpzjqjm3qjfad2lc4802iglii9i7";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-    "web-xhr" = pkgs.stdenv.mkDerivation {
-        name = "web-xhr";
-        version = "v5.0.0";
-        src = pkgs.fetchgit {
-          url = "https://github.com/purescript-web/purescript-web-xhr.git";
-          rev = "476122fe3ad19031aeb69186209b480e2fc9ef25";
-          sha256 = "1swpprc000gfqid6r05pxs8wvlc5xjry5s2kk8lk3ah2dgv297sf";
-        };
-        phases = "installPhase";
-        installPhase = "ln -s $src $out";
-      };
-
-  };
-
-  cpPackage = pkg:
-    let
-      target = ".spago/${pkg.name}/${pkg.version}";
-    in ''
-      if [ ! -e ${target} ]; then
-        echo "Installing ${target}."
-        mkdir -p ${target}
-        cp --no-preserve=mode,ownership,timestamp -r ${toString pkg.outPath}/* ${target}
-      else
-        echo "${target} already exists. Skipping."
-      fi
-    '';
-
-  getGlob = pkg: ''".spago/${pkg.name}/${pkg.version}/src/**/*.purs"'';
-
-  getStoreGlob = pkg: ''"${pkg.outPath}/src/**/*.purs"'';
-
-in {
-  inherit inputs;
-
-  installSpagoStyle = pkgs.writeShellScriptBin "install-spago-style" ''
-      set -e
-      echo installing dependencies...
-      ${builtins.toString (builtins.map cpPackage (builtins.attrValues inputs))}
-      echo "echo done."
-  '';
-
-  buildSpagoStyle = pkgs.writeShellScriptBin "build-spago-style" ''
-      set -e
-      echo building project...
-      purs compile ${builtins.toString (builtins.map getGlob (builtins.attrValues inputs))} "$@"
-      echo done.
-  '';
-
-  buildFromNixStore = pkgs.writeShellScriptBin "build-from-store" ''
-      set -e
-      echo building project using sources from nix store...
-      purs compile ${builtins.toString (
-        builtins.map getStoreGlob (builtins.attrValues inputs))} "$@"
-      echo done.
-  '';
-
-  mkBuildProjectOutput =
-    { src, purs }:
-
-    pkgs.stdenv.mkDerivation {
-      name = "build-project-output";
-      src = src;
-
-      buildInputs = [ purs ];
-
-      installPhase = ''
-        mkdir -p $out
-        purs compile "$src/**/*.purs" ${builtins.toString
-          (builtins.map
-            (x: ''"${x.outPath}/src/**/*.purs"'')
-            (builtins.attrValues inputs))}
-        mv output $out
-      '';
-    };
-}
diff --git a/marlowe-playground-client/webpack.config.js b/marlowe-playground-client/webpack.config.js
index 3369f7aa16..9457966045 100644
--- a/marlowe-playground-client/webpack.config.js
+++ b/marlowe-playground-client/webpack.config.js
@@ -8,6 +8,17 @@ const webpack = require("webpack");
 
 const isDevelopment = process.env.NODE_ENV === "development";
 
+if (process.env.WEB_COMMON_SRC === undefined) {
+  process.env.WEB_COMMON_SRC = path.resolve(__dirname, "../web-common");
+}
+
+if (process.env.WEB_COMMON_MARLOWE_SRC === undefined) {
+  process.env.WEB_COMMON_MARLOWE_SRC = path.resolve(
+    __dirname,
+    "../web-common-marlowe"
+  );
+}
+
 class ErrorReportingPlugin {
   apply(compiler) {
     compiler.hooks.done.tap("ErrorReportingPlugin", (stats) =>
diff --git a/nix/scripts.nix b/nix/scripts.nix
index cc5eb51e24..cc08120ebd 100644
--- a/nix/scripts.nix
+++ b/nix/scripts.nix
@@ -1,4 +1,4 @@
-{ pkgs, system, easyPS, prettier }:
+{ pkgs, easyPS, prettier }:
 let
   writeShellScriptBinInRepoRoot = name: script: pkgs.writeShellScriptBin name ''
     cd `${pkgs.git}/bin/git rev-parse --show-toplevel`
@@ -14,7 +14,7 @@ let
 
     # Re-generate the files
     mkdir -p $generated
-    nix run .#apps.${system}.marlowe-playground-server:exe:marlowe-playground-server -- psgenerator $generated
+    nix run .#marlowe-playground-server:exe:marlowe-playground-server -- psgenerator $generated
 
     # Format them
     cp ${builtins.path { name = "tidyrc.json"; path = ../.tidyrc.json; } } $generated/.tidyrc.json
@@ -27,7 +27,21 @@ let
     cd ../..
     chmod -R +w $generated
   '';
+
+  build-ghc-with-marlowe = "$(nix build .#ghc-with-marlowe --print-out-paths)";
+
+  # start-backend: script to start the plutus-playground-server
+  #
+  # Note: We need to add ghc to the path because the server provides /runghc
+  # which needs ghc and dependencies.
+  startBackend = writeShellScriptBinInRepoRoot "marlowe-playground-server" ''
+    echo "marlowe-playground-server: for development use only"
+    GHC_WITH_PKGS=${build-ghc-with-marlowe}
+    export PATH=$GHC_WITH_PKGS/bin:$PATH
+    export FRONTEND_URL=https://localhost:8009
+    nix run .#marlowe-playground-server:exe:marlowe-playground-server -- webserver
+  '';
 in
 {
-  inherit marlowePlaygroundGeneratePurs;
+  inherit marlowePlaygroundGeneratePurs startBackend;
 }
diff --git a/web-common-marlowe/default.nix b/web-common-marlowe/default.nix
deleted file mode 100644
index 21d6d9e2c2..0000000000
--- a/web-common-marlowe/default.nix
+++ /dev/null
@@ -1 +0,0 @@
-{ lib, gitignore-nix }: gitignore-nix.gitignoreSource ./.
diff --git a/web-common/default.nix b/web-common/default.nix
deleted file mode 100644
index 21d6d9e2c2..0000000000
--- a/web-common/default.nix
+++ /dev/null
@@ -1 +0,0 @@
-{ lib, gitignore-nix }: gitignore-nix.gitignoreSource ./.
diff --git a/web-common/static/icons.css b/web-common/static/icons.css
new file mode 100644
index 0000000000..9725155a30
--- /dev/null
+++ b/web-common/static/icons.css
@@ -0,0 +1,172 @@
+@import url("https://fonts.googleapis.com/css2?family=Material+Icons+Round");
+
+.material-icons-round {
+  font-weight: inherit; /* override the default of normal that ships with google's css */
+  user-select: none; /* disable icons from being selected with the mouse */
+}
+
+.with-icon::after {
+  font-family: "Material Icons Round";
+  font-size: 24px;
+  font-weight: normal;
+  line-height: 1;
+  white-space: nowrap;
+  float: right;
+  margin: -5px -5px -5px 5px;
+}
+
+.with-icon-add::after {
+  content: "add";
+}
+
+.with-icon-add-box::after {
+  content: "add_box";
+}
+
+.with-icon-add-circle::after {
+  content: "add_circle";
+}
+
+.with-icon-arrow-right::after {
+  content: "east";
+}
+
+.with-icon-arrow-left::after {
+  content: "west";
+}
+
+.with-icon-close::after {
+  content: "close";
+}
+
+.with-icon-contacts::after {
+  content: "people";
+}
+
+.with-icon-contract::after {
+  content: "history_edu";
+}
+
+.with-icon-contract-contract-for-differences::after {
+  content: "trending_up";
+}
+
+.with-icon-contract-loan::after {
+  content: "wrap_text"; /* FIXME: this is the wrong icon */
+}
+
+.with-icon-contract-purchase::after {
+  content: "swap_horiz";
+}
+
+.with-icon-copy::after {
+  content: "copy";
+}
+
+.with-icon-done::after {
+  content: "done";
+}
+
+.with-icon-check-circle-outline::after {
+  content: "check_circle_outline";
+}
+
+.with-icon-error-outline::after {
+  content: "error_outline";
+}
+
+.with-icon-expand-more::after {
+  content: "expand_more";
+}
+
+.with-icon-expand-less::after {
+  content: "expand_less";
+}
+
+.with-icon-help::after {
+  content: "help";
+}
+
+.with-icon-help-outline::after {
+  content: "help_outline";
+}
+
+.with-icon-history::after {
+  content: "history";
+}
+
+.with-icon-home::after {
+  content: "home";
+}
+
+.with-icon-info::after {
+  content: "info";
+}
+
+.with-icon-language::after {
+  content: "language";
+}
+
+.with-icon-menu::after {
+  content: "short_text";
+}
+
+.with-icon-next::after {
+  content: "chevron_right";
+}
+
+.with-icon-new-contact::after {
+  content: "person_add_alt";
+}
+
+.with-icon-pay::after {
+  content: "credit_score";
+}
+
+.with-icon-play::after {
+  content: "play";
+}
+
+.with-icon-previous::after {
+  content: "chevron_left";
+}
+
+.with-icon-refresh::after {
+  content: "refresh";
+}
+
+.with-icon-read-more::after {
+  content: "read_more";
+}
+
+.with-icon-roles::after {
+  content: "person_pin_circle";
+}
+
+.with-icon-running::after {
+  content: "directions_run";
+}
+
+.with-icon-south::after {
+  content: "south";
+}
+
+.with-icon-sync::after {
+  content: "sync";
+}
+
+.with-icon-task-alt::after {
+  content: "task_alt";
+}
+
+.with-icon-terms::after {
+  content: "drive_file_rename_outline";
+}
+
+.with-icon-timer::after {
+  content: "timer";
+}
+
+.with-icon-tutorials::after {
+  content: "school";
+}
diff --git a/web-common/static/index.html b/web-common/static/index.html
new file mode 100644
index 0000000000..12dea1186d
--- /dev/null
+++ b/web-common/static/index.html
@@ -0,0 +1,98 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="UTF-8" />
+    <meta
+      name="viewport"
+      content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no, minimal-ui"
+    />
+    <!-- Global site tag (gtag.js) - Google Analytics -->
+    <script
+      async
+      src="https://www.googletagmanager.com/gtag/js?id=<%= htmlWebpackPlugin.options.googleAnalyticsId %>"
+    ></script>
+    <% if(htmlWebpackPlugin.options.vendorDll) { %>
+    <script src="<%= htmlWebpackPlugin.options.vendorDll %>"></script>
+    <% } %> <% if(htmlWebpackPlugin.options.googleAnalyticsId) { %>
+    <script>
+      window.dataLayer = window.dataLayer || [];
+      function gtag() {
+        dataLayer.push(arguments);
+      }
+      gtag("js", new Date());
+      gtag("config", "<%= htmlWebpackPlugin.options.googleAnalyticsId %>", {
+        anonymize_ip: true,
+        custom_map: { dimension1: "product" },
+        product: "<%= htmlWebpackPlugin.options.productName %>",
+      });
+    </script>
+    <% } %> <% if(htmlWebpackPlugin.options.segmentAnalyticsId) { %>
+    <!-- Segment Analytics -->
+    <script>
+      !(function () {
+        var analytics = (window.analytics = window.analytics || []);
+        if (!analytics.initialize)
+          if (analytics.invoked)
+            window.console &&
+              console.error &&
+              console.error("Segment snippet included twice.");
+          else {
+            analytics.invoked = !0;
+            analytics.methods = [
+              "trackSubmit",
+              "trackClick",
+              "trackLink",
+              "trackForm",
+              "pageview",
+              "identify",
+              "reset",
+              "group",
+              "track",
+              "ready",
+              "alias",
+              "debug",
+              "page",
+              "once",
+              "off",
+              "on",
+              "addSourceMiddleware",
+              "addIntegrationMiddleware",
+              "setAnonymousId",
+              "addDestinationMiddleware",
+            ];
+            analytics.factory = function (e) {
+              return function () {
+                var t = Array.prototype.slice.call(arguments);
+                t.unshift(e);
+                analytics.push(t);
+                return analytics;
+              };
+            };
+            for (var e = 0; e < analytics.methods.length; e++) {
+              var key = analytics.methods[e];
+              analytics[key] = analytics.factory(key);
+            }
+            analytics.load = function (key, e) {
+              var t = document.createElement("script");
+              t.type = "text/javascript";
+              t.async = !0;
+              t.src =
+                "https://cdn.segment.com/analytics.js/v1/" +
+                key +
+                "/analytics.min.js";
+              var n = document.getElementsByTagName("script")[0];
+              n.parentNode.insertBefore(t, n);
+              analytics._loadOptions = e;
+            };
+            analytics.SNIPPET_VERSION = "4.13.1";
+            analytics.load(
+              "<%= htmlWebpackPlugin.options.segmentAnalyticsId %>"
+            );
+            analytics.page();
+          }
+      })();
+    </script>
+    <% } %>
+  </head>
+  <body></body>
+</html>
diff --git a/web-common/static/popover.css b/web-common/static/popover.css
new file mode 100644
index 0000000000..fe79b606d6
--- /dev/null
+++ b/web-common/static/popover.css
@@ -0,0 +1,34 @@
+/* This styles were taken from https://popper.js.org/docs/v2/tutorial/ */
+.popover-arrow,
+.popover-arrow::before {
+  position: absolute;
+  width: 8px;
+  height: 8px;
+  background: inherit;
+}
+
+.popover-arrow {
+  visibility: hidden;
+}
+
+.popover-arrow::before {
+  visibility: visible;
+  content: "";
+  transform: rotate(45deg);
+}
+
+div[data-popper-placement^="top"] > .popover-arrow {
+  bottom: -4px;
+}
+
+div[data-popper-placement^="bottom"] > .popover-arrow {
+  top: -4px;
+}
+
+div[data-popper-placement^="left"] > .popover-arrow {
+  right: -4px;
+}
+
+div[data-popper-placement^="right"] > .popover-arrow {
+  left: -4px;
+}
diff --git a/web-common/static/progress-circular.css b/web-common/static/progress-circular.css
new file mode 100644
index 0000000000..d2bdb1d1c6
--- /dev/null
+++ b/web-common/static/progress-circular.css
@@ -0,0 +1,86 @@
+/* Adapted from https://codepen.io/zapdev/pen/MYJRaj */
+.progress.progress-circular svg {
+  height: 100%;
+  width: 100%;
+}
+
+.progress.progress-circular.progress-indeterminate svg {
+  animation: progress-circular-rotate 1.8s linear infinite;
+}
+
+.progress.progress-circular circle {
+  stroke: currentColor;
+  fill: none;
+  transition: stroke-dashoffset 0.5s ease-in-out;
+  stroke-dasharray: 113, 113;
+}
+
+.progress.progress-circular.progress-0 circle {
+  stroke-dashoffset: -113;
+}
+
+.progress.progress-circular.progress-10 circle {
+  stroke-dashoffset: -124.3;
+}
+
+.progress.progress-circular.progress-20 circle {
+  stroke-dashoffset: -135.6;
+}
+
+.progress.progress-circular.progress-30 circle {
+  stroke-dashoffset: -146.9;
+}
+
+.progress.progress-circular.progress-40 circle {
+  stroke-dashoffset: -158.2;
+}
+
+.progress.progress-circular.progress-50 circle {
+  stroke-dashoffset: -169.5;
+}
+
+.progress.progress-circular.progress-60 circle {
+  stroke-dashoffset: -180.8;
+}
+
+.progress.progress-circular.progress-70 circle {
+  stroke-dashoffset: -192.1;
+}
+
+.progress.progress-circular.progress-80 circle {
+  stroke-dashoffset: -203.4;
+}
+
+.progress.progress-circular.progress-90 circle {
+  stroke-dashoffset: -214.7;
+}
+
+.progress.progress-circular.progress-100 circle {
+  stroke-dashoffset: -226;
+}
+
+.progress.progress-circular.progress-indeterminate circle {
+  animation: progress-circular-dash 1.2s ease-in-out infinite 0s;
+  transform-origin: 50% 50%;
+}
+
+@keyframes progress-circular-rotate {
+  100% {
+    transform: rotate(360deg);
+  }
+}
+@keyframes progress-circular-dash {
+  0% {
+    stroke-dasharray: 7, 106;
+    stroke-dashoffset: 0;
+  }
+  50% {
+    stroke-dasharray: 83, 40;
+    stroke-dashoffset: -28;
+  }
+  100% {
+    stroke-dasharray: 7, 106;
+    stroke-dashoffset: -106;
+    transform: rotate(22deg);
+  }
+}