{ lib, pkgs, ... }: with lib; let subdirs = mapAttrs (_: flip pkgs.callPackage {}) (subdirsOf ./.); pkgs' = pkgs // subdirs; in subdirs // rec { haskellPackages = pkgs.haskellPackages.override { overrides = self: super: mapAttrs (name: path: self.callPackage path {}) (mapAttrs' (name: type: if hasSuffix ".nix" name then { name = removeSuffix ".nix" name; value = ./haskell-overrides + "/${name}"; } else null) (builtins.readDir ./haskell-overrides)); }; push = pkgs'.callPackage ./push { inherit (subdirs) get jq; }; execve = name: { filename, argv, envp ? {}, destination ? "" }: writeC name { inherit destination; } '' #include <unistd.h> int main () { const char *filename = ${toC filename}; char *const argv[] = ${toC (argv ++ [null])}; char *const envp[] = ${toC ( mapAttrsToList (k: v: "${k}=${v}") envp ++ [null] )}; execve(filename, argv, envp); return -1; } ''; execveBin = name: cfg: execve name (cfg // { destination = "/bin/${name}"; }); writeC = name: { destination ? "" }: src: pkgs.runCommand name {} '' PATH=${makeSearchPath "bin" (with pkgs; [ binutils coreutils gcc ])} src=${pkgs.writeText "${name}.c" src} exe=$out${destination} mkdir -p "$(dirname "$exe")" gcc -O -Wall -o "$exe" $src strip --strip-unneeded "$exe" ''; writeNixFromCabal = name: path: pkgs.runCommand name {} '' ${pkgs.cabal2nix}/bin/cabal2nix ${path} > $out ''; }