From c1aaaca7f7febe0c587342ae74e7045bb9a67c5a Mon Sep 17 00:00:00 2001
From: tv <tv@shackspace.de>
Date: Fri, 28 Aug 2015 21:31:59 +0200
Subject: krebs += pkgs.writeC lib.toC

---
 krebs/4lib/default.nix  |  6 ++++++
 krebs/5pkgs/default.nix | 13 ++++++++++++-
 2 files changed, 18 insertions(+), 1 deletion(-)

(limited to 'krebs')

diff --git a/krebs/4lib/default.nix b/krebs/4lib/default.nix
index 8b587dfb..ca7219c7 100644
--- a/krebs/4lib/default.nix
+++ b/krebs/4lib/default.nix
@@ -16,4 +16,10 @@ builtins // lib // rec {
   listset = import ./listset.nix { inherit lib; };
   shell = import ./shell.nix { inherit lib; };
   tree = import ./tree.nix { inherit lib; };
+
+  toC = x: {
+    list = "{ ${concatStringsSep ", " (map toC x)} }";
+    null = "NULL";
+    string = toJSON x; # close enough
+  }.${typeOf x};
 }
diff --git a/krebs/5pkgs/default.nix b/krebs/5pkgs/default.nix
index 2149b6f1..c8fb1d2d 100644
--- a/krebs/5pkgs/default.nix
+++ b/krebs/5pkgs/default.nix
@@ -1,4 +1,4 @@
-{ pkgs, ... }:
+{ lib, pkgs, ... }:
 
 let
   inherit (pkgs) callPackage;
@@ -14,4 +14,15 @@ pkgs //
   hashPassword = callPackage ./hashPassword.nix {};
   nq = callPackage ./nq.nix {};
   posix-array = callPackage ./posix-array.nix {};
+
+  writeC = name: {}: src: pkgs.runCommand name {} ''
+    PATH=${lib.makeSearchPath "bin" (with pkgs; [
+      binutils
+      coreutils
+      gcc
+    ])}
+    in=${pkgs.writeText "${name}.c" src}
+    gcc -O -Wall -o $out $in
+    strip --strip-unneeded $out
+  '';
 }
-- 
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