1 files changed, 33 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/development/beam-modules/fetch-rebar-deps.nix b/nixpkgs/pkgs/development/beam-modules/fetch-rebar-deps.nix
new file mode 100644
index 000000000000..389e07beca6c
--- /dev/null
+++ b/nixpkgs/pkgs/development/beam-modules/fetch-rebar-deps.nix
@@ -0,0 +1,33 @@
+{ stdenv, rebar3 }:
+
+{ name, version, sha256, src
+, meta ? {}
+}:
+
+with stdenv.lib;
+
+stdenv.mkDerivation ({
+  name = "rebar-deps-${name}-${version}";
+
+  phases = [ "downloadPhase" "installPhase" ];
+
+  downloadPhase = ''
+    cp ${src} .
+    HOME='.' DEBUG=1 ${rebar3}/bin/rebar3 get-deps
+  '';
+
+  installPhase = ''
+    mkdir -p "$out/_checkouts"
+    for i in ./_build/default/lib/* ; do
+       echo "$i"
+       cp -R "$i" "$out/_checkouts"
+    done
+  '';
+
+  outputHashAlgo = "sha256";
+  outputHashMode = "recursive";
+  outputHash = sha256;
+
+  impureEnvVars = stdenv.lib.fetchers.proxyImpureEnvVars;
+  inherit meta;
+})