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70 lines (58 loc) · 2.24 KB
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# This file provides all the buildable and cacheable packages and
# package outputs in your package set. These are what gets built by CI,
# so if you correctly mark packages as
#
# - broken (using `meta.broken`),
# - unfree (using `meta.license.free`), and
# - locally built (using `preferLocalBuild`)
#
# then your CI will be able to build and cache only those packages for
# which this is possible.
{ pkgs ? import <nixpkgs> { } }:
with builtins;
let
isReserved = n: n == "lib" || n == "overlays" || n == "modules";
isDerivation = p: isAttrs p && p ? type && p.type == "derivation";
isFree = p: p.meta.license.free or true;
isAvailable = p:
!(p.meta.broken or false)
&& pkgs.lib.meta.availableOn pkgs.stdenv.hostPlatform p;
isBuildable = p: isFree p && isAvailable p;
isCacheable = p: !(p.preferLocalBuild or false);
shouldRecurseForDerivations = p: isAttrs p && p.recurseForDerivations or false;
nameValuePair = n: v: { name = n; value = v; };
concatMap = builtins.concatMap or (f: xs: concatLists (map f xs));
flattenPkgs = s:
let
f = p:
if shouldRecurseForDerivations p then flattenPkgs p
else if isDerivation p then [ p ]
else [ ];
in
concatMap f (attrValues s);
outputsOf = p: map (o: p.${o}) p.outputs;
nurAttrs = import ./default.nix { inherit pkgs; };
nurPkgs =
flattenPkgs
(listToAttrs
(map (n: nameValuePair n nurAttrs.${n})
(filter (n: !isReserved n)
(attrNames nurAttrs))));
in
rec {
buildPkgs = filter isBuildable nurPkgs;
cachePkgs = filter isCacheable buildPkgs;
buildOutputs = concatMap outputsOf buildPkgs;
cacheOutputs = concatMap outputsOf cachePkgs;
unfreePkgs = filter (p: isAvailable p && !isFree p) nurPkgs;
# cachix pushFilter regex derived from meta.license, so the workflow has no
# second list of unfree packages to keep in sync. Evaluating it requires
# NIXPKGS_ALLOW_UNFREE=1. "^$" never matches a store path, so an empty
# result filters nothing.
unfreePushFilter =
let
escapeRegex = pkgs.lib.replaceStrings [ "." "+" "?" ] [ "\\." "\\+" "\\?" ];
paths = map (o: o.outPath) (concatMap outputsOf unfreePkgs);
in
if paths == [ ] then "^$" else concatStringsSep "|" (map escapeRegex paths);
}