1 files changed, 15 insertions, 1 deletions
diff --git a/krebs/5pkgs/builders.nix b/krebs/5pkgs/builders.nix
index 5860b9a15..49d04be4d 100644
--- a/krebs/5pkgs/builders.nix
+++ b/krebs/5pkgs/builders.nix
@@ -37,7 +37,17 @@ rec {
       };
     };
 
-  writeBash = makeScriptWriter "${pkgs.bash}/bin/bash";
+  writeBash = name: text:
+    assert (with types; either absolute-pathname filename).check name;
+    pkgs.writeOut (baseNameOf name) {
+      ${optionalString (types.absolute-pathname.check name) name} = {
+        check = pkgs.writeDash "shellcheck.sh" ''
+          ${pkgs.haskellPackages.ShellCheck}/bin/shellcheck "$1" || :
+        '';
+        executable = true;
+        text = "#! ${pkgs.bash}/bin/bash\n${text}";
+      };
+    };
 
   writeBashBin = name:
     assert types.filename.check name;
@@ -91,6 +101,7 @@ rec {
 
     writers.text =
       { path
+      , check ? null
       , executable ? false
       , mode ? if executable then "0755" else "0644"
       , text
@@ -102,6 +113,9 @@ rec {
         var = "file_${hashString "sha1" path}";
         val = text;
         install = /* sh */ ''
+          ${optionalString (check != null) /* sh */ ''
+            ${check} ''$${var}Path
+          ''}
           ${pkgs.coreutils}/bin/install -m ${mode} -D ''$${var}Path $out${path}
         '';
       };