haskell-ci: patch workflow to skip PackageMap.hs in doctests

We use haskell-ci's weird feature to apply a patch to the workflow file
in order to not test PackageMap.hs using doctest since it will always
fail -- there seems to be no way to install nix in haskell-ci's ubuntu
docker containers.

We can hopefully drop this if the following issue gets some kind of
resolution:
haskell-CI/haskell-ci#519

.github/workflows/ci-skip-package-map.patch

@@ -0,0 +1,13 @@
+diff --git a/.github/workflows/haskell-ci.yml b/.github/workflows/haskell-ci.yml
+index 5ed81c0..9bb7e56 100644
+--- a/.github/workflows/haskell-ci.yml
++++ b/.github/workflows/haskell-ci.yml
+@@ -179,7 +179,7 @@ jobs:
+       - name: doctest
+         run: |
+           cd ${PKGDIR_distribution_nixpkgs} || false
+-          doctest -i ../../dist-newstyle/build/*/*/distribution-nixpkgs-*/build/autogen src
++          doctest -i ../../dist-newstyle/build/*/*/distribution-nixpkgs-*/build/autogen src/Distribution/Nixpkgs/Hashes.hs src/Distribution/Nixpkgs/License.hs src/Distribution/Nixpkgs/Meta.hs src/Language/Nix/PrettyPrinting.hs
+       - name: hlint
+         run: |
+           if [ $((HCNUMVER >= 90000)) -ne 0 ] ; then (cd ${PKGDIR_distribution_nixpkgs} && hlint src) ; fi

.github/workflows/haskell-ci.yml

@@ -1,6 +1,6 @@
 # This GitHub workflow config has been generated by a script via
 #
-#   haskell-ci '--doctest' '--doctest-version=>0.18' '--doctest-options=-i ../../dist-newstyle/build/*/*/distribution-nixpkgs-*/build/autogen' '--hlint' 'github' 'distribution-nixpkgs.cabal'
+#   haskell-ci '--github-patches' '.github/workflows/ci-skip-package-map.patch' '--doctest' '--doctest-version=>0.18' '--doctest-options=-i ../../dist-newstyle/build/*/*/distribution-nixpkgs-*/build/autogen' '--hlint' 'github' 'distribution-nixpkgs.cabal'
 #
 # To regenerate the script (for example after adjusting tested-with) run
 #
@@ -10,7 +10,7 @@
 #
 # version: 0.12.1
 #
-# REGENDATA ("0.12.1",["--doctest","--doctest-version=>0.18","--doctest-options=-i ../../dist-newstyle/build/*/*/distribution-nixpkgs-*/build/autogen","--hlint","github","distribution-nixpkgs.cabal"])
+# REGENDATA ("0.12.1",["--github-patches",".github/workflows/ci-skip-package-map.patch","--doctest","--doctest-version=>0.18","--doctest-options=-i ../../dist-newstyle/build/*/*/distribution-nixpkgs-*/build/autogen","--hlint","github","distribution-nixpkgs.cabal"])
 #
 name: Haskell-CI
 on:
@@ -179,7 +179,7 @@ jobs:
       - name: doctest
         run: |
           cd ${PKGDIR_distribution_nixpkgs} || false
-          doctest -i ../../dist-newstyle/build/*/*/distribution-nixpkgs-*/build/autogen src
+          doctest -i ../../dist-newstyle/build/*/*/distribution-nixpkgs-*/build/autogen src/Distribution/Nixpkgs/Hashes.hs src/Distribution/Nixpkgs/License.hs src/Distribution/Nixpkgs/Meta.hs src/Language/Nix/PrettyPrinting.hs
       - name: hlint
         run: |
           if [ $((HCNUMVER >= 90000)) -ne 0 ] ; then (cd ${PKGDIR_distribution_nixpkgs} && hlint src) ; fi