1 files changed, 44 insertions, 42 deletions

diff --git a/krebs/5pkgs/builders.nix b/krebs/5pkgs/builders.nix
index 8ba0ab5a7..924e0c086 100644
--- a/krebs/5pkgs/builders.nix
+++ b/krebs/5pkgs/builders.nix
@@ -2,16 +2,16 @@
 with config.krebs.lib;
 rec {
   execve = name: { filename, argv ? null, envp ? {}, destination ? "" }: let
-  in writeC name { inherit destination; } ''
+  in writeC name { inherit destination; } /* c */ ''
     #include <unistd.h>
 
     static char *const filename = ${toC filename};
 
     ${if argv == null
-      then /* Propagate arguments */ ''
+      then /* Propagate arguments */ /* c */ ''
         #define MAIN_ARGS int argc, char **argv
       ''
-      else /* Provide fixed arguments */ ''
+      else /* Provide fixed arguments */ /* c */ ''
         #define MAIN_ARGS void
         static char *const argv[] = ${toC (argv ++ [null])};
       ''}
@@ -28,22 +28,22 @@ rec {
 
   execveBin = name: cfg: execve name (cfg // { destination = "/bin/${name}"; });
 
-  writeBash = name: text: pkgs.writeScript name ''
-    #! ${pkgs.bash}/bin/bash
-    ${text}
-  '';
+  makeScriptWriter = interpreter: name: text:
+    assert (with types; either absolute-pathname filename).check name;
+    pkgs.writeOut (baseNameOf name) {
+      ${optionalString (types.absolute-pathname.check name) name} = {
+        executable = true;
+        text = "#! ${interpreter}\n${text}";
+      };
+    };
 
-  writeBashBin = name: text: pkgs.writeTextFile {
-    executable = true;
-    destination = "/bin/${name}";
-    name = name;
-    text = ''
-      #! ${pkgs.bash}/bin/bash
-      ${text}
-    '';
-  };
+  writeBash = makeScriptWriter "${pkgs.bash}/bin/bash";
 
-  writeC = name: { destination ? "" }: src: pkgs.runCommand name {} ''
+  writeBashBin = name:
+    assert types.filename.check name;
+    pkgs.writeBash "/bin/${name}";
+
+  writeC = name: { destination ? "" }: src: pkgs.runCommand name {} /* sh */ ''
     PATH=${makeBinPath (with pkgs; [
       binutils
       coreutils
@@ -56,37 +56,39 @@ rec {
     strip --strip-unneeded "$exe"
   '';
 
-  writeDash = name: text: pkgs.writeScript name ''
-    #! ${pkgs.dash}/bin/dash
-    ${text}
-  '';
+  writeDash = makeScriptWriter "${pkgs.dash}/bin/dash";
 
-  writeDashBin = name: text: pkgs.writeTextFile {
-    executable = true;
-    destination = "/bin/${name}";
-    name = name;
-    text = ''
-      #! ${pkgs.dash}/bin/dash
-      ${text}
-    '';
-  };
+  writeDashBin = name:
+    assert types.filename.check name;
+    pkgs.writeDash "/bin/${name}";
 
   writeEximConfig = name: text: pkgs.runCommand name {
     inherit text;
     passAsFile = [ "text" ];
-  } ''
+  } /* sh */ ''
     # TODO validate exim config even with config.nix.useChroot == true
     # currently doing so will fail because "user exim was not found"
     #${pkgs.exim}/bin/exim -C "$textPath" -bV >/dev/null
     mv "$textPath" $out
   '';
 
-  writeFiles = name: specs0:
+  writeOut = name: specs0:
   let
-    specs = mapAttrsToList (path: spec0: {
-      path = assert types.pathname.check path; path;
+    specs = mapAttrsToList (path0: spec0: rec {
+      path = guard {
+        type = types.pathname;
+        value = path0;
+      };
       var = "file_${hashString "sha1" path}";
       text = spec0.text;
+      executable = guard {
+        type = types.bool;
+        value = spec0.executable or false;
+      };
+      mode = guard {
+        type = types.file-mode;
+        value = spec0.mode or (if executable then "0755" else "0644");
+      };
     }) specs0;
 
     filevars = genAttrs' specs (spec: nameValuePair spec.var spec.text);
@@ -97,7 +99,7 @@ rec {
       set -efu
       PATH=${makeBinPath [pkgs.coreutils]}
       ${concatMapStrings (spec: /* sh */ ''
-        install -D ''$${spec.var}Path $out${spec.path}
+        install -m ${spec.mode} -D ''$${spec.var}Path $out${spec.path}
       '') specs}
     '';
 
@@ -119,7 +121,7 @@ rec {
       isExecutable = executables != {};
       isLibrary = library != null;
 
-      cabal-file = pkgs.writeText "${name}-${version}.cabal" ''
+      cabal-file = pkgs.writeText "${name}-${version}.cabal" /* cabal */ ''
         build-type: Simple
         cabal-version: >= 1.2
         name: ${name}
@@ -135,7 +137,7 @@ rec {
         , text
         , ... }:
         if types.filename.check exe-name
-          then "install -D ${file} $out/${relpath}"
+          then /* sh */ "install -D ${file} $out/${relpath}"
           else throw "argument ‘exe-name’ is not a ${types.filename.name}";
 
       exe-section =
@@ -145,7 +147,7 @@ rec {
         , file ? pkgs.writeText "${name}-${exe-name}.hs" text
         , relpath ? "${exe-name}.hs"
         , text
-        , ... }: ''
+        , ... }: /* cabal */ ''
           executable ${exe-name}
             build-depends: ${concatStringsSep "," build-depends}
             ghc-options: ${toString ghc-options}
@@ -168,7 +170,7 @@ rec {
         { build-depends ? base-depends ++ extra-depends
         , extra-depends ? []
         , exposed-modules
-        , ... }: ''
+        , ... }: /* cabal */ ''
           library
             build-depends: ${concatStringsSep "," build-depends}
             ghc-options: ${toString ghc-options}
@@ -182,7 +184,7 @@ rec {
         , text
         , ... }:
         if types.haskell.modid.check mod-name
-          then "install -D ${file} $out/${relpath}"
+          then /* sh */ "install -D ${file} $out/${relpath}"
           else throw "argument ‘mod-name’ is not a ${types.haskell.modid.name}";
     in
       haskellPackages.mkDerivation {
@@ -196,7 +198,7 @@ rec {
             (optionals isLibrary (get-depends library))
             haskellPackages;
         pname = name;
-        src = pkgs.runCommand "${name}-${version}-src" {} ''
+        src = pkgs.runCommand "${name}-${version}-src" {} /* sh */ ''
           install -D ${cabal-file} $out/${cabal-file.name}
           ${optionalString isLibrary (lib-install library)}
           ${concatStringsSep "\n" (mapAttrsToList exe-install executables)}
@@ -208,7 +210,7 @@ rec {
       "The function `writeNixFromCabal` has been deprecated in favour of"
       "`writeHaskell`."
     ])
-    (name: path: pkgs.runCommand name {} ''
+    (name: path: pkgs.runCommand name {} /* sh */ ''
       ${pkgs.cabal2nix}/bin/cabal2nix ${path} > $out
     '');
 }