libs.nix

   1 { pkgs }:
   2 with pkgs;
   3 rec {
   4   yarn2nixPackage = let
   5     src = fetchFromGitHub {
   6       owner = "moretea";
   7       repo = "yarn2nix";
   8       rev = "780e33a07fd821e09ab5b05223ddb4ca15ac663f";
   9       sha256 = "1f83cr9qgk95g3571ps644rvgfzv2i4i7532q8pg405s4q5ada3h";
  10       fetchSubmodules = true;
  11     };
  12   in
  13     (callPackage src {}) // { inherit src; };
  14
  15   nodeEnv = import ./lib/node-env.nix;
  16
  17   fetchedGithub = path:
  18     let
  19       json = lib.importJSON path;
  20     in rec {
  21       version = json.tag;
  22       name = "${json.meta.name}-${version}";
  23       src = fetchFromGitHub json.github;
  24     };
  25
  26   fetchedGit = path:
  27     let
  28       json = lib.importJSON path;
  29     in rec {
  30       version = json.tag;
  31       name = "${json.meta.name}-${version}";
  32       src = fetchgit json.git;
  33     };
  34
  35   fetchedGitPrivate = path:
  36     let
  37       json = lib.importJSON path;
  38     in rec {
  39       version = json.tag;
  40       name = "${json.meta.name}-${version}";
  41       src = fetchgitPrivate json.git;
  42     };
  43
  44   wrap = { paths ? [], vars ? {}, file ? null, script ? null, name ? "wrap" }:
  45     assert file != null || script != null ||
  46       abort "wrap needs 'file' or 'script' argument";
  47     with rec {
  48       set  = n: v: "--set ${pkgs.lib.escapeShellArg n} " +
  49                     "${pkgs.lib.escapeShellArg v}";
  50       args = (map (p: "--prefix PATH : ${p}/bin") paths) ++
  51             (builtins.attrValues (pkgs.lib.mapAttrs set vars));
  52     };
  53     runCommand name
  54       {
  55         f           = if file == null then writeScript name script else file;
  56         buildInputs = [ makeWrapper ];
  57       }
  58       ''
  59         makeWrapper "$f" "$out" ${toString args}
  60       '';
  61
  62   # This adds header colors to the builds, but it rebuilds the whole
  63   # world from scratch, so only use it to debug!
  64   # add it as postHook in derivations
  65   immaePostHook = ''
  66     header() {
  67       echo -ne "\033[1;36m"
  68       echo -n "$1"
  69       echo -e "\033[0m"
  70     }
  71
  72     echoCmd() {
  73       printf "\033[1;34m%s:\033[0m" "$1"
  74       shift
  75       printf ' %q' "$@"
  76       echo
  77     }
  78   '';
  79
  80 }