From da73e45cd0e8b07602097702d4c9ed19fe6e2d74 Mon Sep 17 00:00:00 2001
From: Eric Seidel <gridaphobe@gmail.com>
Date: Sat, 28 Mar 2015 12:57:54 -0700
Subject: [PATCH] fetchgitlocal: local fetcher based on `git ls-files`

---
 pkgs/build-support/fetchgitlocal/default.nix | 10 ++++++++++
 pkgs/top-level/all-packages.nix              |  4 ++++
 2 files changed, 14 insertions(+)
 create mode 100644 pkgs/build-support/fetchgitlocal/default.nix

diff --git a/pkgs/build-support/fetchgitlocal/default.nix b/pkgs/build-support/fetchgitlocal/default.nix
new file mode 100644
index 00000000000..24568667751
--- /dev/null
+++ b/pkgs/build-support/fetchgitlocal/default.nix
@@ -0,0 +1,10 @@
+{ runCommand, git }: src:
+
+runCommand "local-git-export" {} ''
+  cd ${src}
+  mkdir -p "$out"
+  for file in $(${git}/bin/git ls-files); do
+    mkdir -p "$out/$(dirname $file)"
+    cp -d $file "$out/$file"
+  done
+''
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 48824508bbb..2e432e24b51 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -329,6 +329,10 @@ let
 
   fetchgitrevision = import ../build-support/fetchgitrevision runCommand git;
 
+  fetchgitLocal = import ../build-support/fetchgitlocal {
+    inherit runCommand git;
+  };
+
   fetchmtn = callPackage ../build-support/fetchmtn (config.fetchmtn or {});
 
   packer = callPackage ../development/tools/packer { };