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{ supportedSystems
, packageSet ? (import ../..)
, scrubJobs ? true
, # Attributes passed to nixpkgs. Don't build packages marked as unfree.
nixpkgsArgs ? { config = { allowUnfree = false; inHydra = true; }; }
}:
let
lib = import ../../lib;
in with lib;
rec {
pkgs = packageSet (lib.recursiveUpdate { system = "x86_64-linux"; config.allowUnsupportedSystem = true; } nixpkgsArgs);
inherit lib;
hydraJob' = if scrubJobs then hydraJob else id;
/* !!! Hack: poor man's memoisation function. Necessary to prevent
Nixpkgs from being evaluated again and again for every
job/platform pair. */
mkPkgsFor = crossSystem: let
packageSet' = args: packageSet (args // { inherit crossSystem; } // nixpkgsArgs);
pkgs_x86_64_linux = packageSet' { system = "x86_64-linux"; };
pkgs_i686_linux = packageSet' { system = "i686-linux"; };
pkgs_aarch64_linux = packageSet' { system = "aarch64-linux"; };
pkgs_armv6l_linux = packageSet' { system = "armv6l-linux"; };
pkgs_armv7l_linux = packageSet' { system = "armv7l-linux"; };
pkgs_x86_64_darwin = packageSet' { system = "x86_64-darwin"; };
pkgs_x86_64_freebsd = packageSet' { system = "x86_64-freebsd"; };
pkgs_i686_freebsd = packageSet' { system = "i686-freebsd"; };
pkgs_i686_cygwin = packageSet' { system = "i686-cygwin"; };
pkgs_x86_64_cygwin = packageSet' { system = "x86_64-cygwin"; };
in system:
if system == "x86_64-linux" then pkgs_x86_64_linux
else if system == "i686-linux" then pkgs_i686_linux
else if system == "aarch64-linux" then pkgs_aarch64_linux
else if system == "armv6l-linux" then pkgs_armv6l_linux
else if system == "armv7l-linux" then pkgs_armv7l_linux
else if system == "x86_64-darwin" then pkgs_x86_64_darwin
else if system == "x86_64-freebsd" then pkgs_x86_64_freebsd
else if system == "i686-freebsd" then pkgs_i686_freebsd
else if system == "i686-cygwin" then pkgs_i686_cygwin
else if system == "x86_64-cygwin" then pkgs_x86_64_cygwin
else abort "unsupported system type: ${system}";
pkgsFor = pkgsForCross null;
# More poor man's memoisation
pkgsForCross = let
examplesByConfig = lib.flip lib.mapAttrs'
lib.systems.examples
(_: crossSystem: nameValuePair crossSystem.config {
inherit crossSystem;
pkgsFor = mkPkgsFor crossSystem;
});
native = mkPkgsFor null;
in crossSystem: let
candidate = examplesByConfig.${crossSystem.config} or null;
in if crossSystem == null
then native
else if candidate != null && lib.matchAttrs crossSystem candidate.crossSystem
then candidate.pkgsFor
else mkPkgsFor crossSystem; # uncached fallback
# Given a list of 'meta.platforms'-style patterns, return the sublist of
# `supportedSystems` containing systems that matches at least one of the given
# patterns.
#
# This is written in a funny way so that we only elaborate the systems once.
supportedMatches = let
supportedPlatforms = map
(system: lib.systems.elaborate { inherit system; })
supportedSystems;
in metaPatterns: let
anyMatch = platform:
lib.any (lib.meta.platformMatch platform) metaPatterns;
matchingPlatforms = lib.filter anyMatch supportedPlatforms;
in map ({ system, ...}: system) matchingPlatforms;
assertTrue = bool:
if bool
then pkgs.runCommand "evaluated-to-true" {} "touch $out"
else pkgs.runCommand "evaluated-to-false" {} "false";
/* The working or failing mails for cross builds will be sent only to
the following maintainers, as most package maintainers will not be
interested in the result of cross building a package. */
crossMaintainers = [ maintainers.viric ];
# Generate attributes for all supported systems.
forAllSystems = genAttrs supportedSystems;
# Generate attributes for all sytems matching at least one of the given
# patterns
forMatchingSystems = metaPatterns: genAttrs (supportedMatches metaPatterns);
/* Build a package on the given set of platforms. The function `f'
is called for each supported platform with Nixpkgs for that
platform as an argument . We return an attribute set containing
a derivation for each supported platform, i.e. ‘{ x86_64-linux =
f pkgs_x86_64_linux; i686-linux = f pkgs_i686_linux; ... }’. */
testOn = testOnCross null;
/* Similar to the testOn function, but with an additional
'crossSystem' parameter for packageSet', defining the target
platform for cross builds. */
testOnCross = crossSystem: metaPatterns: f: forMatchingSystems metaPatterns
(system: hydraJob' (f (pkgsForCross crossSystem system)));
/* Given a nested set where the leaf nodes are lists of platforms,
map each leaf node to `testOn [platforms...] (pkgs:
pkgs.<attrPath>)'. */
mapTestOn = _mapTestOnHelper id null;
_mapTestOnHelper = f: crossSystem: mapAttrsRecursive
(path: metaPatterns: testOnCross crossSystem metaPatterns
(pkgs: f (getAttrFromPath path pkgs)));
/* Similar to the testOn function, but with an additional 'crossSystem'
* parameter for packageSet', defining the target platform for cross builds,
* and triggering the build of the host derivation. */
mapTestOnCross = _mapTestOnHelper
(addMetaAttrs { maintainers = crossMaintainers; });
/* Recursively map a (nested) set of derivations to an isomorphic
set of meta.platforms values. */
packagePlatforms = mapAttrs (name: value:
let res = builtins.tryEval (
if isDerivation value then
value.meta.hydraPlatforms
or (supportedMatches (value.meta.platforms or [ "x86_64-linux" ]))
else if value.recurseForDerivations or false || value.recurseForRelease or false then
packagePlatforms value
else
[]);
in if res.success then res.value else []
);
/* Common platform groups on which to test packages. */
inherit (platforms) unix linux darwin cygwin all mesaPlatforms;
/* Platform groups for specific kinds of applications. */
x11Supported = linux;
gtkSupported = linux;
ghcSupported = linux;
}
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