1 files changed, 30 insertions, 2 deletions
diff --git a/krebs/5pkgs/default.nix b/krebs/5pkgs/default.nix
index 062f0a515..3658c43e0 100644
--- a/krebs/5pkgs/default.nix
+++ b/krebs/5pkgs/default.nix
@@ -1,17 +1,45 @@
-{ pkgs, ... }:
+{ lib, pkgs, ... }:
+
+with import ../4lib { inherit lib; };
 
 let
   inherit (pkgs) callPackage;
 in
 
 pkgs //
-{
+rec {
   cac = callPackage ./cac.nix {};
   dic = callPackage ./dic.nix {};
   genid = callPackage ./genid.nix {};
   github-hosts-sync = callPackage ./github-hosts-sync.nix {};
   github-known_hosts = callPackage ./github-known_hosts.nix {};
   hashPassword = callPackage ./hashPassword.nix {};
+  nq = callPackage ./nq.nix {};
   posix-array = callPackage ./posix-array.nix {};
   youtube-tools = callPackage ./youtube-tools.nix {};
+
+  execve = name: { filename, argv, envp }:
+    writeC name {} ''
+      #include <unistd.h>
+      int main () {
+        const char *filename = ${toC filename};
+        char *const argv[] = ${toC (argv ++ [null])};
+        char *const envp[] = ${toC (
+          mapAttrsToList (k: v: "${k}=${v}") envp ++ [null]
+        )};
+        execve(filename, argv, envp);
+        return -1;
+      }
+    '';
+
+  writeC = name: {}: src: pkgs.runCommand name {} ''
+    PATH=${lib.makeSearchPath "bin" (with pkgs; [
+      binutils
+      coreutils
+      gcc
+    ])}
+    in=${pkgs.writeText "${name}.c" src}
+    gcc -O -Wall -o $out $in
+    strip --strip-unneeded $out
+  '';
 }