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rec {
allPackages = import ./all-packages.nix;
pkgs = allPackages {};
/* !!! Hack: poor man's memoisation function. Necessary for prevent
Nixpkgs from being evaluated again and again for every
job/platform pair. */
pkgsFor = system:
if system == "x86_64-linux" then pkgs_x86_64_linux
else if system == "i686-linux" then pkgs_i686_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 abort "unsupported system type: ${system}";
pkgs_x86_64_linux = allPackages { system = "x86_64-linux"; };
pkgs_i686_linux = allPackages { system = "i686-linux"; };
pkgs_x86_64_darwin = allPackages { system = "x86_64-darwin"; };
pkgs_x86_64_freebsd = allPackages { system = "x86_64-freebsd"; };
pkgs_i686_freebsd = allPackages { system = "i686-freebsd"; };
pkgs_i686_cygwin = allPackages { system = "i686-cygwin"; };
/* 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 = with pkgs.lib.maintainers; [ viric ];
/* Set the Hydra scheduling priority for a job. The default
priority (10) should be used for most jobs. A different
priority should only be used for a few particularly interesting
jobs (in terms of giving feedback to developers), such as stdenv.
*/
prio = level: job: toJob job // { schedulingPriority = level; };
toJob = x: if builtins.isAttrs x then x else
{ type = "job"; systems = x; schedulingPriority = 10; };
/* Perform a job on the given set of platforms. The function `f' is
called by Hydra for each platform, and should return some job
to build on that platform. `f' is passed the Nixpkgs collection
for the platform in question. */
testOn = systems: f: {system ? builtins.currentSystem}:
if pkgs.lib.elem system systems then f (pkgsFor system) else {};
/* Similar to the testOn function, but with an additional 'crossSystem'
* parameter for allPackages, defining the target platform for cross builds */
testOnCross = crossSystem: systems: f: {system ? builtins.currentSystem}:
if pkgs.lib.elem system systems then f (allPackages {inherit system
crossSystem;}) else {};
/* Map an attribute of the form `foo = [platforms...]' to `testOn
[platforms...] (pkgs: pkgs.foo)'. */
mapTestOn = pkgs.lib.mapAttrsRecursiveCond
(as: !(as ? type && as.type == "job"))
(path: value:
let
job = toJob value;
getPkg = pkgs:
pkgs.lib.addMetaAttrs { schedulingPriority = toString job.schedulingPriority; }
(pkgs.lib.getAttrFromPath path pkgs);
in testOn job.systems getPkg);
/* Similar to the testOn function, but with an additional 'crossSystem'
* parameter for allPackages, defining the target platform for cross builds,
* and triggering the build of the host derivation (cross built - hostDrv). */
mapTestOnCross = crossSystem: pkgs.lib.mapAttrsRecursiveCond
(as: !(as ? type && as.type == "job"))
(path: value:
let
job = toJob value;
getPkg = pkgs: (pkgs.lib.addMetaAttrs {
schedulingPriority = toString job.schedulingPriority;
maintainers = crossMaintainers;
}
(pkgs.lib.getAttrFromPath path pkgs));
in testOnCross crossSystem job.systems getPkg);
/* Find all packages that have a meta.platforms field listing the
supported platforms. */
packagesWithMetaPlatform = attrSet:
if builtins ? tryEval then
let pairs = pkgs.lib.concatMap
(x:
let pair = builtins.tryEval
(let
attrVal = (builtins.getAttr x attrSet);
in
{val=(processPackage attrVal);
attrVal = attrVal;
attrValIsAttrs = builtins.isAttrs attrVal;
});
success = (builtins.tryEval pair.value.attrVal).success;
in
if success && pair.value.attrValIsAttrs &&
pair.value.val != [] then
[{name= x; value=pair.value.val;}] else [])
(builtins.attrNames attrSet);
in
builtins.listToAttrs pairs
else {};
# May fail as much as it wishes, we will catch the error.
processPackage = attrSet:
if attrSet ? recurseForDerivations && attrSet.recurseForDerivations then
packagesWithMetaPlatform attrSet
else if attrSet ? recurseForRelease && attrSet.recurseForRelease then
packagesWithMetaPlatform attrSet
else
if attrSet ? meta && attrSet.meta ? platforms
then attrSet.meta.platforms
else [];
/* Common platform groups on which to test packages. */
inherit (pkgs.lib.platforms) linux darwin cygwin allBut all mesaPlatforms;
/* Platform groups for specific kinds of applications. */
x11Supported = linux;
gtkSupported = linux;
ghcSupported = linux;
}
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