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Merge pull request #107322 from sternenseemann/fetch-github-leavedotgit

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fetchFromGitHub: also use git if deepClone or leaveDotGit is used
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Léo Gaspard 2021-02-21 13:28:00 +01:00 committed by GitHub
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2 changed files with 18 additions and 6 deletions
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4
doc/builders/fetchers.chapter.md
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@ -31,6 +31,8 @@ Used with Subversion. Expects `url` to a Subversion directory, `rev`, and `sha25
Used with Git. Expects `url` to a Git repo, `rev`, and `sha256`. `rev` in this case can be full the git commit id (SHA1 hash) or a tag name like `refs/tags/v1.0`.
Additionally the following optional arguments can be given: `fetchSubmodules = true` makes `fetchgit` also fetch the submodules of a repository. If `deepClone` is set to true, the entire repository is cloned as opposing to just creating a shallow clone. `deepClone = true` also implies `leaveDotGit = true` which means that the `.git` directory of the clone won't be removed after checkout.
## `fetchfossil`
Used with Fossil. Expects `url` to a Fossil archive, `rev`, and `sha256`.
@ -49,6 +51,8 @@ A number of fetcher functions wrap part of `fetchurl` and `fetchzip`. They are m
`fetchFromGitHub` expects four arguments. `owner` is a string corresponding to the GitHub user or organization that controls this repository. `repo` corresponds to the name of the software repository. These are located at the top of every GitHub HTML page as `owner`/`repo`. `rev` corresponds to the Git commit hash or tag (e.g `v1.0`) that will be downloaded from Git. Finally, `sha256` corresponds to the hash of the extracted directory. Again, other hash algorithms are also available but `sha256` is currently preferred.
`fetchFromGitHub` uses `fetchzip` to download the source archive generated by GitHub for the specified revision. If `leaveDotGit`, `deepClone` or `fetchSubmodules` are set to `true`, `fetchFromGitHub` will use `fetchgit` instead. Refer to its section for documentation of these options.
## `fetchFromGitLab`
This is used with GitLab repositories. The arguments expected are very similar to fetchFromGitHub above.

20
pkgs/build-support/fetchgithub/default.nix
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@ -1,17 +1,19 @@
{ lib, fetchgit, fetchzip }:
{ owner, repo, rev, name ? "source"
, fetchSubmodules ? false, private ? false
, fetchSubmodules ? false, leaveDotGit ? null
, deepClone ? false, private ? false
, githubBase ? "github.com", varPrefix ? null
, ... # For hash agility
}@args: assert private -> !fetchSubmodules;
}@args:
let
baseUrl = "https://${githubBase}/${owner}/${repo}";
passthruAttrs = removeAttrs args [ "owner" "repo" "rev" "fetchSubmodules" "private" "githubBase" "varPrefix" ];
varBase = "NIX${if varPrefix == null then "" else "_${varPrefix}"}_GITHUB_PRIVATE_";
useFetchGit = fetchSubmodules || (leaveDotGit == true) || deepClone;
# We prefer fetchzip in cases we don't need submodules as the hash
# is more stable in that case.
fetcher = if fetchSubmodules then fetchgit else fetchzip;
fetcher = if useFetchGit then fetchgit else fetchzip;
privateAttrs = lib.optionalAttrs private {
netrcPhase = ''
if [ -z "''$${varBase}USERNAME" -o -z "''$${varBase}PASSWORD" ]; then
@ -26,8 +28,14 @@ let
'';
netrcImpureEnvVars = [ "${varBase}USERNAME" "${varBase}PASSWORD" ];
};
fetcherArgs = (if fetchSubmodules
then { inherit rev fetchSubmodules; url = "${baseUrl}.git"; }
fetcherArgs = (if useFetchGit
then {
inherit rev deepClone fetchSubmodules; url = "${baseUrl}.git";
} // lib.optionalAttrs (leaveDotGit != null) { inherit leaveDotGit; }
else ({ url = "${baseUrl}/archive/${rev}.tar.gz"; } // privateAttrs)
) // passthruAttrs // { inherit name; };
in fetcher fetcherArgs // { meta.homepage = baseUrl; inherit rev; }
in
assert private -> !useFetchGit;
fetcher fetcherArgs // { meta.homepage = baseUrl; inherit rev; }