Luke Granger-Brown
57725ef3ec
git-subtree-dir: third_party/nixpkgs git-subtree-split: 76612b17c0ce71689921ca12d9ffdc9c23ce40b2
92 lines
2.8 KiB
Nix
92 lines
2.8 KiB
Nix
# buildEnv creates a tree of symlinks to the specified paths. This is
|
|
# a fork of the hardcoded buildEnv in the Nix distribution.
|
|
|
|
{ buildPackages, runCommand, lib, substituteAll, writeClosure }:
|
|
|
|
let
|
|
builder = substituteAll {
|
|
src = ./builder.pl;
|
|
inherit (builtins) storeDir;
|
|
};
|
|
in
|
|
|
|
lib.makeOverridable
|
|
({ name
|
|
|
|
, # The manifest file (if any). A symlink $out/manifest will be
|
|
# created to it.
|
|
manifest ? ""
|
|
|
|
, # The paths to symlink.
|
|
paths
|
|
|
|
, # Whether to ignore collisions or abort.
|
|
ignoreCollisions ? false
|
|
|
|
, # Whether to include closures of all input paths.
|
|
includeClosures ? false
|
|
|
|
, # If there is a collision, check whether the contents and permissions match
|
|
# and only if not, throw a collision error.
|
|
checkCollisionContents ? true
|
|
|
|
, # The paths (relative to each element of `paths') that we want to
|
|
# symlink (e.g., ["/bin"]). Any file not inside any of the
|
|
# directories in the list is not symlinked.
|
|
pathsToLink ? ["/"]
|
|
|
|
, # The package outputs to include. By default, only the default
|
|
# output is included.
|
|
extraOutputsToInstall ? []
|
|
|
|
, # Root the result in directory "$out${extraPrefix}", e.g. "/share".
|
|
extraPrefix ? ""
|
|
|
|
, # Shell commands to run after building the symlink tree.
|
|
postBuild ? ""
|
|
|
|
# Additional inputs
|
|
, nativeBuildInputs ? [] # Handy e.g. if using makeWrapper in `postBuild`.
|
|
, buildInputs ? []
|
|
|
|
, passthru ? {}
|
|
, meta ? {}
|
|
}:
|
|
let
|
|
chosenOutputs = map (drv: {
|
|
paths =
|
|
# First add the usual output(s): respect if user has chosen explicitly,
|
|
# and otherwise use `meta.outputsToInstall`. The attribute is guaranteed
|
|
# to exist in mkDerivation-created cases. The other cases (e.g. runCommand)
|
|
# aren't expected to have multiple outputs.
|
|
(if (! drv ? outputSpecified || ! drv.outputSpecified)
|
|
&& drv.meta.outputsToInstall or null != null
|
|
then map (outName: drv.${outName}) drv.meta.outputsToInstall
|
|
else [ drv ])
|
|
# Add any extra outputs specified by the caller of `buildEnv`.
|
|
++ lib.filter (p: p!=null)
|
|
(builtins.map (outName: drv.${outName} or null) extraOutputsToInstall);
|
|
priority = drv.meta.priority or lib.meta.defaultPriority;
|
|
}) paths;
|
|
|
|
pathsForClosure = lib.pipe chosenOutputs [
|
|
(map (p: p.paths))
|
|
lib.flatten
|
|
(lib.remove null)
|
|
];
|
|
in runCommand name
|
|
rec {
|
|
inherit manifest ignoreCollisions checkCollisionContents passthru
|
|
meta pathsToLink extraPrefix postBuild
|
|
nativeBuildInputs buildInputs;
|
|
pkgs = builtins.toJSON chosenOutputs;
|
|
extraPathsFrom = lib.optional includeClosures (writeClosure pathsForClosure);
|
|
preferLocalBuild = true;
|
|
allowSubstitutes = false;
|
|
# XXX: The size is somewhat arbitrary
|
|
passAsFile = if builtins.stringLength pkgs >= 128*1024 then [ "pkgs" ] else [ ];
|
|
}
|
|
''
|
|
${buildPackages.perl}/bin/perl -w ${builder}
|
|
eval "$postBuild"
|
|
'')
|