980f5e2187
Introduces three new types representing each of the possible package sources and moves the logic for specifying the package source to the server. Concrete changes: * Determining whether a specified git reference is a commit vs. a branch/tag is now done in the server, and is done more precisely by using a regular expression. * Package sources now have a new `CacheKey` function which can be used to retrieve a key under which a build manifest can be cached *if* the package source is not a moving target (i.e. a full git commit hash of either nixpkgs or a private repository). This function is not yet used. * Users *must* now specify a package source, Nixery no longer defaults to anything and will fail to launch if no source is configured.
45 lines
1.7 KiB
Nix
45 lines
1.7 KiB
Nix
# Copyright 2019 Google LLC
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
# you may not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License at
|
|
#
|
|
# https://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
# See the License for the specific language governing permissions and
|
|
# limitations under the License.
|
|
|
|
# Load a Nix package set from one of the supported source types
|
|
# (nixpkgs, git, path).
|
|
{ srcType, srcArgs, importArgs ? { } }:
|
|
|
|
with builtins;
|
|
let
|
|
# If a nixpkgs channel is requested, it is retrieved from Github (as
|
|
# a tarball) and imported.
|
|
fetchImportChannel = channel:
|
|
let
|
|
url =
|
|
"https://github.com/NixOS/nixpkgs-channels/archive/${channel}.tar.gz";
|
|
in import (fetchTarball url) importArgs;
|
|
|
|
# If a git repository is requested, it is retrieved via
|
|
# builtins.fetchGit which defaults to the git configuration of the
|
|
# outside environment. This means that user-configured SSH
|
|
# credentials etc. are going to work as expected.
|
|
fetchImportGit = spec: import (fetchGit spec) importArgs;
|
|
|
|
# No special handling is used for paths, so users are expected to pass one
|
|
# that will work natively with Nix.
|
|
importPath = path: import (toPath path) importArgs;
|
|
in if srcType == "nixpkgs" then
|
|
fetchImportChannel srcArgs
|
|
else if srcType == "git" then
|
|
fetchImportGit (fromJSON srcArgs)
|
|
else if srcType == "path" then
|
|
importPath srcArgs
|
|
else
|
|
throw ("Invalid package set source specification: ${srcType} (${srcArgs})")
|