94 lines
3.1 KiB
Nix
94 lines
3.1 KiB
Nix
{ config, pkgs, lib, ... }:
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let
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cfg = config.programs.ccache;
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in {
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options.programs.ccache = {
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# host configuration
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enable = lib.mkEnableOption (lib.mdDoc "CCache, a compiler cache for fast recompilation of C/C++ code");
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cacheDir = lib.mkOption {
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type = lib.types.path;
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description = lib.mdDoc "CCache directory";
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default = "/var/cache/ccache";
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};
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# target configuration
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packageNames = lib.mkOption {
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type = lib.types.listOf lib.types.str;
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description = lib.mdDoc "Nix top-level packages to be compiled using CCache";
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default = [];
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example = [ "wxGTK32" "ffmpeg" "libav_all" ];
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};
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owner = lib.mkOption {
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type = lib.types.str;
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default = "root";
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description = lib.mdDoc "Owner of CCache directory";
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};
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group = lib.mkOption {
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type = lib.types.str;
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default = "nixbld";
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description = lib.mdDoc "Group owner of CCache directory";
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};
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};
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config = lib.mkMerge [
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# host configuration
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(lib.mkIf cfg.enable {
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systemd.tmpfiles.rules = [ "d ${cfg.cacheDir} 0770 ${cfg.owner} ${cfg.group} -" ];
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# "nix-ccache --show-stats" and "nix-ccache --clear"
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security.wrappers.nix-ccache = {
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inherit (cfg) owner group;
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setuid = false;
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setgid = true;
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source = pkgs.writeScript "nix-ccache.pl" ''
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#!${pkgs.perl}/bin/perl
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%ENV=( CCACHE_DIR => '${cfg.cacheDir}' );
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sub untaint {
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my $v = shift;
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return '-C' if $v eq '-C' || $v eq '--clear';
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return '-V' if $v eq '-V' || $v eq '--version';
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return '-s' if $v eq '-s' || $v eq '--show-stats';
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return '-z' if $v eq '-z' || $v eq '--zero-stats';
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exec('${pkgs.ccache}/bin/ccache', '-h');
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}
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exec('${pkgs.ccache}/bin/ccache', map { untaint $_ } @ARGV);
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'';
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};
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})
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# target configuration
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(lib.mkIf (cfg.packageNames != []) {
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nixpkgs.overlays = [
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(self: super: lib.genAttrs cfg.packageNames (pn: super.${pn}.override { stdenv = builtins.trace "with ccache: ${pn}" self.ccacheStdenv; }))
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(self: super: {
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ccacheWrapper = super.ccacheWrapper.override {
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extraConfig = ''
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export CCACHE_COMPRESS=1
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export CCACHE_DIR="${cfg.cacheDir}"
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export CCACHE_UMASK=007
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if [ ! -d "$CCACHE_DIR" ]; then
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echo "====="
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echo "Directory '$CCACHE_DIR' does not exist"
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echo "Please create it with:"
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echo " sudo mkdir -m0770 '$CCACHE_DIR'"
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echo " sudo chown ${cfg.owner}:${cfg.group} '$CCACHE_DIR'"
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echo "====="
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exit 1
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fi
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if [ ! -w "$CCACHE_DIR" ]; then
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echo "====="
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echo "Directory '$CCACHE_DIR' is not accessible for user $(whoami)"
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echo "Please verify its access permissions"
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echo "====="
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exit 1
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fi
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'';
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};
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})
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];
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})
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];
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}
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