81 lines
2.5 KiB
Nix
81 lines
2.5 KiB
Nix
let
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stdenvFun = { }: { name = "stdenv"; };
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stdenv2Fun = { }: { name = "stdenv2"; };
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fetchurlFun = { stdenv }: assert stdenv.name == "stdenv"; { name = "fetchurl"; };
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atermFun = { stdenv, fetchurl }: { name = "aterm-${stdenv.name}"; };
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aterm2Fun = { stdenv, fetchurl }: { name = "aterm2-${stdenv.name}"; };
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nixFun = { stdenv, fetchurl, aterm }: { name = "nix-${stdenv.name}-${aterm.name}"; };
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mplayerFun =
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{ stdenv, fetchurl, enableX11 ? false, xorg ? null, enableFoo ? true, foo ? null }:
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assert stdenv.name == "stdenv2";
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assert enableX11 -> xorg.libXv.name == "libXv";
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assert enableFoo -> foo != null;
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{ name = "mplayer-${stdenv.name}.${xorg.libXv.name}-${xorg.libX11.name}"; };
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makeOverridable = f: origArgs: f origArgs //
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{ override = newArgs:
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makeOverridable f (origArgs // (if builtins.isFunction newArgs then newArgs origArgs else newArgs));
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};
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callPackage_ = pkgs: f: args:
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makeOverridable f ((builtins.intersectAttrs (builtins.functionArgs f) pkgs) // args);
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allPackages =
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{ overrides ? (pkgs: pkgsPrev: { }) }:
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let
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callPackage = callPackage_ pkgs;
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pkgs = pkgsStd // (overrides pkgs pkgsStd);
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pkgsStd = {
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inherit pkgs;
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stdenv = callPackage stdenvFun { };
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stdenv2 = callPackage stdenv2Fun { };
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fetchurl = callPackage fetchurlFun { };
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aterm = callPackage atermFun { };
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xorg = callPackage xorgFun { };
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mplayer = callPackage mplayerFun { stdenv = pkgs.stdenv2; enableFoo = false; };
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nix = callPackage nixFun { };
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};
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in pkgs;
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libX11Fun = { stdenv, fetchurl }: { name = "libX11"; };
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libX11_2Fun = { stdenv, fetchurl }: { name = "libX11_2"; };
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libXvFun = { stdenv, fetchurl, libX11 }: { name = "libXv"; };
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xorgFun =
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{ pkgs }:
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let callPackage = callPackage_ (pkgs // pkgs.xorg); in
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{
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libX11 = callPackage libX11Fun { };
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libXv = callPackage libXvFun { };
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};
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in
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let
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pkgs = allPackages { };
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pkgs2 = allPackages {
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overrides = pkgs: pkgsPrev: {
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stdenv = pkgs.stdenv2;
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nix = pkgsPrev.nix.override { aterm = aterm2Fun { inherit (pkgs) stdenv fetchurl; }; };
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xorg = pkgsPrev.xorg // { libX11 = libX11_2Fun { inherit (pkgs) stdenv fetchurl; }; };
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};
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};
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in
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[ pkgs.stdenv.name
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pkgs.fetchurl.name
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pkgs.aterm.name
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pkgs2.aterm.name
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pkgs.xorg.libX11.name
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pkgs.xorg.libXv.name
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pkgs.mplayer.name
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pkgs2.mplayer.name
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pkgs.nix.name
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pkgs2.nix.name
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]
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