Adapt postgresql overlay

[perso/Immae/Config/Nix.git] / libs.nix

diff --git a/libs.nix b/libs.nix
index c85808bbada8be51bf884495e2d8495f2eca95b4..981039ec2d1b354e43da3fca3d6f9ce349f44f9b 100644 (file)
--- a/libs.nix
+++ b/libs.nix
@@ -1,14 +1,17 @@
-let nixpkgs_unstable = import (builtins.fetchTarball {
-  # FIXME: upgrade to nixpkgs 19 when stable and stick to stable
-  # versions
-  name = "nixos-unstable-2018-12-08";
-  url = https://github.com/nixos/nixpkgs/archive/61c3169a0e17d789c566d5b241bfe309ce4a6275.tar.gz;
-  sha256 = "0qbycg7wkb71v20rchlkafrjfpbk2fnlvvbh3ai9pyfisci5wxvq";
-}) {};
-in
-  with nixpkgs_unstable;
-{
-  inherit nixpkgs_unstable;
+{ nixpkgs }:
+with nixpkgs;
+rec {
+  yarn2nixPackage = let
+    src = fetchFromGitHub {
+      owner = "moretea";
+      repo = "yarn2nix";
+      rev = "780e33a07fd821e09ab5b05223ddb4ca15ac663f";
+      sha256 = "1f83cr9qgk95g3571ps644rvgfzv2i4i7532q8pg405s4q5ada3h";
+      fetchSubmodules = true;
+    };
+  in
+    (callPackage src {}) // { inherit src; };
+
   fetchedGithub = path:
     let
       json = lib.importJSON path;
@@ -36,5 +39,22 @@ in
       src = fetchgitPrivate json.git;
     };
 
-  checkEnv = var: builtins.stringLength (builtins.getEnv var) > 0;
+  wrap = { paths ? [], vars ? {}, file ? null, script ? null, name ? "wrap" }:
+    assert file != null || script != null ||
+      abort "wrap needs 'file' or 'script' argument";
+    with rec {
+      set  = n: v: "--set ${pkgs.lib.escapeShellArg n} " +
+                    "${pkgs.lib.escapeShellArg v}";
+      args = (map (p: "--prefix PATH : ${p}/bin") paths) ++
+            (builtins.attrValues (pkgs.lib.mapAttrs set vars));
+    };
+    runCommand name
+      {
+        f           = if file == null then writeScript name script else file;
+        buildInputs = [ makeWrapper ];
+      }
+      ''
+        makeWrapper "$f" "$out" ${toString args}
+      '';
+
 }