4529ed1259
Originally wanted to include ignoreCollisions in cups-progs, but I think it's better if we use ignoreCollisions only if there are _real_ collisions between files with different contents. Of course, we also check whether the file permissions match, so you get a collision if contents are the same but the permissions are different. Signed-off-by: aszlig <aszlig@redmoonstudios.org>
62 lines
1.8 KiB
Nix
62 lines
1.8 KiB
Nix
# buildEnv creates a tree of symlinks to the specified paths. This is
|
|
# a fork of the buildEnv in the Nix distribution. Most changes should
|
|
# eventually be merged back into the Nix distribution.
|
|
|
|
{ perl, runCommand, lib }:
|
|
|
|
{ name
|
|
|
|
, # The manifest file (if any). A symlink $out/manifest will be
|
|
# created to it.
|
|
manifest ? ""
|
|
|
|
, # The paths to symlink.
|
|
paths
|
|
|
|
, # Whether to ignore collisions or abort.
|
|
ignoreCollisions ? false
|
|
|
|
, # If there is a collision, check whether the contents and permissions match
|
|
# and only if not, throw a collision error.
|
|
checkCollisionContents ? true
|
|
|
|
, # The paths (relative to each element of `paths') that we want to
|
|
# symlink (e.g., ["/bin"]). Any file not inside any of the
|
|
# directories in the list is not symlinked.
|
|
pathsToLink ? ["/"]
|
|
|
|
, # The package outputs to include. By default, only the default
|
|
# output is included.
|
|
outputsToLink ? []
|
|
|
|
, # Root the result in directory "$out${extraPrefix}", e.g. "/share".
|
|
extraPrefix ? ""
|
|
|
|
, # Shell commands to run after building the symlink tree.
|
|
postBuild ? ""
|
|
|
|
, # Additional inputs. Handy e.g. if using makeWrapper in `postBuild`.
|
|
buildInputs ? []
|
|
|
|
, passthru ? {}
|
|
, meta ? {}
|
|
}:
|
|
|
|
runCommand name
|
|
rec {
|
|
inherit manifest ignoreCollisions checkCollisionContents passthru
|
|
meta pathsToLink extraPrefix postBuild buildInputs;
|
|
pkgs = builtins.toJSON (map (drv: {
|
|
paths =
|
|
[ drv ]
|
|
++ lib.concatMap (outputName: lib.optional (drv.${outputName}.outPath or null != null) drv.${outputName}) outputsToLink;
|
|
priority = drv.meta.priority or 5;
|
|
}) paths);
|
|
preferLocalBuild = true;
|
|
# XXX: The size is somewhat arbitrary
|
|
passAsFile = if builtins.stringLength pkgs >= 128*1024 then [ "pkgs" ] else null;
|
|
}
|
|
''
|
|
${perl}/bin/perl -w ${./builder.pl}
|
|
eval "$postBuild"
|
|
''
|