fetchGit
builtins.fetchGit
Takes 1 arguments
args
Fetch a path from git. args can be a URL, in which case the HEAD
of the repo at that URL is fetched. Otherwise, it can be an
attribute with the following attributes (all except url optional):
-
urlThe URL of the repo.
-
name(default:source)The name of the directory the repo should be exported to in the store.
-
rev(default: the tip ofref)The Git revision to fetch. This is typically a commit hash.
-
ref(default:HEAD)The Git reference under which to look for the requested revision. This is often a branch or tag name.
This option has no effect once
shallowcloning is enabled.By default, the
refvalue is prefixed withrefs/heads/. As of 2.3.0, Nix doesn't prefixrefs/heads/ifrefstarts withrefs/. -
submodules(default:false)A Boolean parameter that specifies whether submodules should be checked out.
-
exportIgnore(default:true)A Boolean parameter that specifies whether
export-ignorefrom.gitattributesshould be applied. This approximates part of thegit archivebehavior.Enabling this option is not recommended because it is unknown whether the Git developers commit to the reproducibility of
export-ignorein newer Git versions. -
shallow(default:false)Make a shallow clone when fetching the Git tree. When this is enabled, the options
refandallRefshave no effect anymore. -
lfs(default:false)A boolean that when
truespecifies that Git LFS files should be fetched. -
allRefsWhether to fetch all references (eg. branches and tags) of the repository. With this argument being true, it's possible to load a
revfrom anyref. (by default onlyrevs from the specifiedrefare supported).This option has no effect once
shallowcloning is enabled. -
verifyCommit(default:trueifpublicKeyorpublicKeysare provided, otherwisefalse)Whether to check
revfor a signature matchingpublicKeyorpublicKeys. IfverifyCommitis enabled, thenfetchGitcannot use a local repository with uncommitted changes. Requires theverified-fetchesexperimental feature. -
publicKeyThe public key against which
revis verified ifverifyCommitis enabled. Requires theverified-fetchesexperimental feature. -
keytype(default:"ssh-ed25519")The key type of
publicKey. Possible values:"ssh-dsa""ssh-ecdsa""ssh-ecdsa-sk""ssh-ed25519""ssh-ed25519-sk""ssh-rsa"Requires theverified-fetchesexperimental feature.
-
publicKeysThe public keys against which
revis verified ifverifyCommitis enabled. Must be given as a list of attribute sets with the following form:{ key = "<public key>"; type = "<key type>"; # optional, default: "ssh-ed25519" }Requires the
verified-fetchesexperimental feature.
Here are some examples of how to use fetchGit.
-
To fetch a private repository over SSH:
builtins.fetchGit { url = "[email protected]:my-secret/repository.git"; ref = "master"; rev = "adab8b916a45068c044658c4158d81878f9ed1c3"; } -
To fetch an arbitrary reference:
builtins.fetchGit { url = "https://github.com/NixOS/nix.git"; ref = "refs/heads/0.5-release"; } -
If the revision you're looking for is in the default branch of the git repository you don't strictly need to specify the branch name in the
refattribute.However, if the revision you're looking for is in a future branch for the non-default branch you will need to specify the the
refattribute as well.builtins.fetchGit { url = "https://github.com/nixos/nix.git"; rev = "841fcbd04755c7a2865c51c1e2d3b045976b7452"; ref = "1.11-maintenance"; }Note
It is nice to always specify the branch which a revision belongs to. Without the branch being specified, the fetcher might fail if the default branch changes. Additionally, it can be confusing to try a commit from a non-default branch and see the fetch fail. If the branch is specified the fault is much more obvious.
-
If the revision you're looking for is in the default branch of the git repository you may omit the
refattribute.builtins.fetchGit { url = "https://github.com/nixos/nix.git"; rev = "841fcbd04755c7a2865c51c1e2d3b045976b7452"; } -
To fetch a specific tag:
builtins.fetchGit { url = "https://github.com/nixos/nix.git"; ref = "refs/tags/1.9"; } -
To fetch the latest version of a remote branch:
builtins.fetchGit { url = "ssh://[email protected]/nixos/nix.git"; ref = "master"; } -
To verify the commit signature:
builtins.fetchGit { url = "ssh://[email protected]/nixos/nix.git"; verifyCommit = true; publicKeys = [ { type = "ssh-ed25519"; key = "AAAAC3NzaC1lZDI1NTE5AAAAIArPKULJOid8eS6XETwUjO48/HKBWl7FTCK0Z//fplDi"; } ]; }Nix refetches the branch according to the
tarball-ttlsetting.This behavior is disabled in pure evaluation mode.
-
To fetch the content of a checked-out work directory:
builtins.fetchGit ./work-dir
If the URL points to a local directory, and no ref or rev is
given, fetchGit uses the current content of the checked-out
files, even if they are not committed or added to Git's index. It
only considers files added to the Git repository, as listed by git ls-files.
Noogle detected
fetchgit :: AttrSet -> AttrSet
Implementation
This function is implemented in c++ and is part of the native nix runtime.