diff --git a/.gitignore b/.gitignore
index 9034d506e..826667704 100644
--- a/.gitignore
+++ b/.gitignore
@@ -47,3 +47,7 @@ rust/jank
 
 # secrets
 .github_access_token
+
+# CI thingies
+/llvm.sh
+/linux-install.sh
diff --git a/bin/jank/test_everything.clj b/bin/jank/test_everything.clj
index a08657476..fe6a69596 100755
--- a/bin/jank/test_everything.clj
+++ b/bin/jank/test_everything.clj
@@ -33,7 +33,8 @@
       (do
         ; Install deps required for running our tests.
         (util/quiet-shell {} "sudo apt-get install -y default-jdk software-properties-common lsb-release npm lcov leiningen")
-        (util/quiet-shell {} "sudo npm install --global @chrisoakman/standard-clojure-style")
+        ; TODO: Enable once we're linting Clojure/jank again.
+        ;(util/quiet-shell {} "sudo npm install --global @chrisoakman/standard-clojure-style")
 
         ; Install jank's build deps.
         (util/quiet-shell {} (os->deps-cmd "Linux"))
@@ -58,7 +59,7 @@
 (defn -main [{:keys [install-deps? validate-formatting? compiler+runtime]}]
   (summary/initialize)
 
-  (util/log-boundary "Environment")
+  (util/log-boundary "Show environment")
   (show-env)
 
   (util/log-boundary "Install dependencies")
@@ -72,6 +73,6 @@
                                      :build? (:build? compiler+runtime)}))
 
 (when (= *file* (System/getProperty "babashka.file"))
-  (-main {:install-deps? (parse-boolean (or (System/getenv "JANK_INSTALL_DEPS") "true"))
-          :validate-formatting? (parse-boolean (or (System/getenv "JANK_LINT") "true"))
-          :compiler+runtime {:build? (some? (System/getenv "JANK_BUILD_TYPE"))}}))
+  (-main {:install-deps? (parse-boolean (util/get-env "JANK_INSTALL_DEPS" "true"))
+          :validate-formatting? (parse-boolean (util/get-env "JANK_LINT" "true"))
+          :compiler+runtime {:build? (some? (util/get-env "JANK_BUILD_TYPE"))}}))
diff --git a/bin/jank/util.clj b/bin/jank/util.clj
index 80fc72e8d..2a1708932 100644
--- a/bin/jank/util.clj
+++ b/bin/jank/util.clj
@@ -7,6 +7,15 @@
 
 (def llvm-version 19)
 
+(defn get-env
+  ([s]
+   (get-env s nil))
+  ([s fallback]
+   (let [raw (System/getenv s)]
+     (if-not (empty? raw)
+       raw
+       fallback))))
+
 (defn log-boundary [title]
   (println "\n────────────────" title "────────────────")
   (summary/boundary title))
diff --git a/compiler+runtime/bin/jank/compiler+runtime/bash_test.clj b/compiler+runtime/bin/jank/compiler+runtime/bash_test.clj
index 7b1bf9a19..1769da95a 100755
--- a/compiler+runtime/bin/jank/compiler+runtime/bash_test.clj
+++ b/compiler+runtime/bin/jank/compiler+runtime/bash_test.clj
@@ -14,7 +14,7 @@
     (util/log-info "Not enabled")
     (let [bash-test-dir (str compiler+runtime-dir "/test/bash")
           test-files (b.f/glob bash-test-dir "**/{pass,fail}-test")
-          extra-env {"PATH" (str compiler+runtime-dir "/build" ":" (System/getenv "PATH"))}]
+          extra-env {"PATH" (str compiler+runtime-dir "/build" ":" (util/get-env "PATH"))}]
       (doseq [test-file test-files]
         (let [expect-pass? (clojure.string/ends-with? (str test-file) "pass-test")
               dirname (b.f/parent test-file)
diff --git a/compiler+runtime/bin/jank/compiler+runtime/core.clj b/compiler+runtime/bin/jank/compiler+runtime/core.clj
index 4552b9002..dccaae7c1 100755
--- a/compiler+runtime/bin/jank/compiler+runtime/core.clj
+++ b/compiler+runtime/bin/jank/compiler+runtime/core.clj
@@ -15,16 +15,16 @@
 
   ; Compile and test
   (jank.compiler+runtime.build+test/-main {:enabled? build?
-                                           :build-type (or (System/getenv "JANK_BUILD_TYPE") "Debug")
-                                           :analyze (or (System/getenv "JANK_ANALYZE") "off")
-                                           :sanitize (or (System/getenv "JANK_SANITIZE") "none")
-                                           :coverage (or (System/getenv "JANK_COVERAGE") "off")})
+                                           :build-type (util/get-env "JANK_BUILD_TYPE" "Debug")
+                                           :analyze (util/get-env "JANK_ANALYZE" "off")
+                                           :sanitize (util/get-env "JANK_SANITIZE" "none")
+                                           :coverage (util/get-env "JANK_COVERAGE" "off")})
 
   ; Bash tests
   (jank.compiler+runtime.bash-test/-main {:enabled? build?})
 
   ; Codecov (merge results)
-  (jank.compiler+runtime.coverage/-main {:enabled? (= "on" (or (System/getenv "JANK_COVERAGE") "off"))}))
+  (jank.compiler+runtime.coverage/-main {:enabled? (= "on" (System/getenv "JANK_COVERAGE" "off"))}))
 
 (when (= *file* (System/getProperty "babashka.file"))
   (-main {:validate-formatting? true