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forgejo/routers/api/v1
Jade Lovelace 6631f56ebf Add an immutable tarball link to archive download headers for Nix
This allows `nix flake metadata` and nix in general to lock a *branch*
tarball link in a manner that causes it to fetch the correct commit even
if the branch is updated with a newer version.

For further context, Nix flakes are a feature that, among other things,
allows for "inputs" that are "github:someuser/somerepo",
"https://some-tarball-service/some-tarball.tar.gz",
"sourcehut:~meow/nya" or similar. This feature allows our users to fetch
tarballs of git-based inputs to their builds rather than using git to
fetch them, saving significant download time.

There is presently no gitea or forgejo specific fetcher in Nix, and we
don't particularly wish to have one. Ideally (as a developer on a Nix
implementation myself) we could just use the generic tarball fetcher and
not add specific forgejo support, but to do so, we need additional
metadata to know which commit a given *branch* tarball represents, which
is the purpose of the Link header added here.

The result of this patch is that a Nix user can specify `inputs.something.url =
"https://forgejo-host/some/project/archive/main.tar.gz"` in flake.nix
and get a link to some concrete tarball for the actual commit in the
lock file, then when they run `nix flake update` in the future, they
will get the latest commit in that branch.

Example of it working locally:

 » nix flake metadata --refresh 'http://localhost:3000/api/v1/repos/jade/cats/archive/main.tar.gz?dir=configs/nix'
Resolved URL:  http://localhost:3000/api/v1/repos/jade/cats/archive/main.tar.gz?dir=configs/nix
Locked URL:    804ede182b.tar.gz?dir=configs
/nix&narHash=sha256-yP7KkDVfuixZzs0fsqhSETXFC0y8m6nmPLw2GrAMxKQ%3D
Description:   Computers with the nixos
Path:          /nix/store/s856c6yqghyan4v0zy6jj19ksv0q22nx-source
Revision:      804ede182b6b66469b23ea4d21eece52766b7a06
Last modified: 2024-05-02 00:48:32

For details on the header value, see:
56763ff918/doc/manual/src/protocols/tarball-fetcher.md
2024-05-03 15:21:45 -07:00
..
activitypub activitypub: warn instead of error 2024-03-24 07:12:31 +01:00
admin Fix empty field login_name in API response JSON when creating user (#30511) 2024-04-21 11:59:16 +02:00
misc Port "Fix wrong test usage of AppSubURL" 2024-03-06 21:47:44 +01:00
notify drop log.Error in ReadRepoNotifications 2024-03-24 07:12:31 +01:00
org feat(api): enhance Actions Secrets Management API for repository (#30656) 2024-04-28 15:39:01 +02:00
packages remove util.OptionalBool and related functions (#29513) 2024-03-06 12:10:46 +08:00
repo Add an immutable tarball link to archive download headers for Nix 2024-05-03 15:21:45 -07:00
settings Move context from modules to services (#29440) 2024-03-06 12:10:43 +08:00
shared Move context from modules to services (#29440) 2024-03-06 12:10:43 +08:00
swagger feat(api): implement branch/commit comparison API (#30349) 2024-04-21 11:58:18 +02:00
user Add setting to disable user features when user login type is not plain (#29615) 2024-04-07 11:09:21 +02:00
utils Move context from modules to services (#29440) 2024-03-06 12:10:43 +08:00
api.go feat(api): enhance Actions Secrets Management API for repository (#30656) 2024-04-28 15:39:01 +02:00