diff options
Diffstat (limited to 'nixpkgs/pkgs/build-support/buildenv/default.nix')
-rw-r--r-- | nixpkgs/pkgs/build-support/buildenv/default.nix | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/build-support/buildenv/default.nix b/nixpkgs/pkgs/build-support/buildenv/default.nix new file mode 100644 index 000000000000..560f59bcce7d --- /dev/null +++ b/nixpkgs/pkgs/build-support/buildenv/default.nix @@ -0,0 +1,81 @@ +# 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 }: + +let + builder = substituteAll { + src = ./builder.pl; + inherit (builtins) storeDir; + }; +in + +lib.makeOverridable +({ name + +, # The manifest file (if any). A symlink $out/manifest will be + # created to it. + manifest ? "" + +, # The paths to symlink. + paths + +, # Whether to ignore collisions or abort. + ignoreCollisions ? false + +, # If there is a collision, check whether the contents and permissions match + # and only if not, throw a collision error. + checkCollisionContents ? true + +, # The paths (relative to each element of `paths') that we want to + # symlink (e.g., ["/bin"]). Any file not inside any of the + # directories in the list is not symlinked. + pathsToLink ? ["/"] + +, # The package outputs to include. By default, only the default + # output is included. + extraOutputsToInstall ? [] + +, # Root the result in directory "$out${extraPrefix}", e.g. "/share". + extraPrefix ? "" + +, # Shell commands to run after building the symlink tree. + postBuild ? "" + +# Additional inputs +, nativeBuildInputs ? [] # Handy e.g. if using makeWrapper in `postBuild`. +, buildInputs ? [] + +, passthru ? {} +, meta ? {} +}: + +runCommand name + rec { + inherit manifest ignoreCollisions checkCollisionContents passthru + meta pathsToLink extraPrefix postBuild + nativeBuildInputs buildInputs; + pkgs = builtins.toJSON (map (drv: { + paths = + # First add the usual output(s): respect if user has chosen explicitly, + # and otherwise use `meta.outputsToInstall`. The attribute is guaranteed + # to exist in mkDerivation-created cases. The other cases (e.g. runCommand) + # aren't expected to have multiple outputs. + (if (! drv ? outputSpecified || ! drv.outputSpecified) + && drv.meta.outputsToInstall or null != null + then map (outName: drv.${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 5; + }) paths); + 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" + '') |