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