Merge remote-tracking branch 'lass/master'

ci.nix

@@ -0,0 +1,26 @@
+let
+  pkgs = import <nixpkgs> {};
+
+  hello_worlds = import examples/hello_world.nix;
+  simples = import examples/simple.nix;
+
+  writeTest = expectedValue: test: pkgs.writeScript "test" ''
+    #!/bin/sh
+    if test "$(${test})" != "${expectedValue}"; then
+      echo 'test ${test} failed'
+      exit 1
+    fi
+  '';
+
+in
+  pkgs.lib.mapAttrs' (n: v: pkgs.lib.nameValuePair "hello_${n}" (writeTest "hello world" v)) hello_worlds //
+  pkgs.lib.mapAttrs' (n: v: pkgs.lib.nameValuePair "simple_${n}" v) {
+    bash = writeTest "bash features" simples.bash;
+    dash = writeTest "dash features" simples.dash;
+    haskell = writeTest "Rolf" simples.haskell;
+    perl = writeTest "Howdy!" simples.perl;
+    python2 = writeTest "['some', 'random', 'variables']" simples.python2;
+    python3 = writeTest "['some', 'random', 'variables']" simples.python3;
+    sed = writeTest "hello world" simples.sed;
+  }
+

examples/hello_world.nix

@@ -0,0 +1,33 @@
+let
+  pkgs = import <nixpkgs> { overlays = [ (import ../pkgs) ]; };
+in {
+  bash = pkgs.writeBash "hello-world" ''
+    echo 'hello world'
+  '';
+  c = pkgs.writeC "hello-world"  {} ''
+    #include <stdio.h>
+    int main() {
+      printf("hello world\n");
+      return 0;
+    }
+  '';
+  dash = pkgs.writeDash "hello-world" ''
+    echo 'hello world'
+  '';
+  haskell = pkgs.writeHaskell "hello-world" [] ''
+    main = do
+      putStrLn "hello world"
+  '';
+  perl = pkgs.writePerl "hello-world" {} ''
+    print "hello world\n";
+  '';
+  python2 = pkgs.writePython2 "hello-world" {} ''
+    print "hello world"
+  '';
+  python3 = pkgs.writePython3 "hello-world" {} ''
+    print("hello world")
+  '';
+  sed = pkgs.writeDash "sed-example" ''
+    echo xxx | ${pkgs.writeSed "hello-world" "s/xxx/hello world/"}
+  '';
+}

examples/simple.nix

@@ -0,0 +1,42 @@
+let
+  pkgs = import <nixpkgs> { overlays = [ (import ../pkgs) ]; };
+in {
+  bash = pkgs.writeBash "hello-world" ''
+   if [[ "test" == "test" ]]; then echo "bash features"; fi
+  '';
+  # cc -L/nix/store/...blah/lib -I/nix/store/...blah/include
+  dash = pkgs.writeDash "hello-world" ''
+   test '~' = '~' && echo 'dash features'
+  '';
+  haskell = pkgs.writeHaskell "hello-world" [ "acme-cuteboy" ] ''
+    import Acme.CuteBoy
+
+    main :: IO ()
+    main = print Rolf
+  '';
+  perl = pkgs.writePerl "simple.pl" { deps = [ pkgs.perlPackages.boolean ]; } ''
+    use boolean;
+    print "Howdy!\n" if true;
+  '';
+  python2 = pkgs.writePython2 "hello-world" { deps = [ pkgs.python2Packages.pyyaml ]; } ''
+    import yaml
+
+    print yaml.load("""
+      - some
+      - random
+      - variables
+    """)
+  '';
+  python3 = pkgs.writePython3 "hello-world" { deps = [ pkgs.python3Packages.pyyaml ]; } ''
+    import yaml
+
+    print(yaml.load("""
+      - some
+      - random
+      - variables
+    """))
+  '';
+  sed = pkgs.writeDash "sed-example" ''
+    echo hello | ${pkgs.writeSed "hello-world" "s/hello/& world/"}
+  '';
+}

pkgs/default.nix

@@ -319,6 +319,23 @@ pkgs: oldpkgs: {
       ${pkgs.cabal2nix}/bin/cabal2nix ${path} > $out
     '');
 
+  writePerl = name: { deps ? [] }:
+  let
+    perl-env = pkgs.buildEnv {
+      name = "perl-environment";
+      paths = deps;
+      pathsToLink = [
+        "/lib/perl5/site_perl"
+      ];
+    };
+  in
+  pkgs.makeScriptWriter {
+    interpreter = "${pkgs.perl}/bin/perl -I ${perl-env}/lib/perl5/site_perl";
+  } name;
+
+  writePerlBin = name:
+    pkgs.writePerl "/bin/${name}";
+
   writePython2 = name: { deps ? [], flakeIgnore ? [] }:
   let
     py = pkgs.python2.withPackages (ps: deps);