Add flannel, etcd backed network fabric for containers

pkgs/tools/networking/flannel/default.nix

@@ -0,0 +1,30 @@
+{ stdenv, lib, go, fetchurl, fetchgit, fetchhg, fetchbzr, fetchFromGitHub }:
+
+stdenv.mkDerivation rec {
+  version = "0.1.0";
+  name = "flannel-${version}";
+
+  src = import ./deps.nix {
+    inherit stdenv lib fetchFromGitHub;
+  };
+
+  buildInputs = [ go ];
+
+  buildPhase = ''
+    export GOPATH=$src
+    go build -v -o flannel github.com/coreos/flannel
+  '';
+
+  installPhase = ''
+    mkdir -p $out/bin
+    mv flannel $out/bin/flannel
+  '';
+
+  meta = with stdenv.lib; {
+    description = "Flannel is an etcd backed network fabric for containers";
+    homepage = https://github.com/coreos/flannel;
+    license = licenses.asl20;
+    maintainers = with maintainers; [ offline ];
+    platforms = platforms.unix;
+  };
+}

pkgs/tools/networking/flannel/deps.nix

@@ -0,0 +1,28 @@
+# This file was generated by go2nix.
+{ stdenv, lib, fetchFromGitHub }:
+
+let
+  goDeps = [
+    {
+      root = "github.com/coreos/flannel";
+      src = fetchFromGitHub {
+        owner = "coreos";
+        repo = "flannel";
+        rev = "cd584fa5e1545ae86c965588e81ceb24455e980d";
+        sha256 = "1f7x6a2c8ix6j5y1r0dq56b58bl2rs2ycbdqb9fz5zv1zk2w20rd";
+      };
+    }
+  ];
+
+in
+
+stdenv.mkDerivation rec {
+  name = "go-deps";
+
+  buildCommand =
+    lib.concatStrings
+      (map (dep: ''
+              mkdir -p $out/src/`dirname ${dep.root}`
+              ln -s ${dep.src} $out/src/${dep.root}
+            '') goDeps);
+}

pkgs/top-level/all-packages.nix

@@ -1119,6 +1119,8 @@ let
 
   fdm = callPackage ../tools/networking/fdm {};
 
+  flannel = callPackage ../tools/networking/flannel { };
+
   figlet = callPackage ../tools/misc/figlet { };
 
   file = callPackage ../tools/misc/file { };