kubo-migrator: add migration from 15 to 16

[Luflosi]

Description of changes

The latest migration is required by the latest Kubo version 0.30.0.
I also rewrote the migration code:

• Migrate to pkgs/by-name
• Format with nixfmt-rfc-style
• Make it possible to remove support for very old migrations in the future by increasing the minRepoVersion parameter
• Rename kubo-migrator-all-fs-repo-migrations to kubo-fs-repo-migrations since it may no longer include all migrations
• Add an alias for kubo-migrator-all-fs-repo-migrations to keep backwards compatibility
• Update descriptions to differentiate between kubo-migrator and kubo-migrator-unwrapped and better describe the purpose of the migrator
• Add a description to every individual migration
• Add a description to kubo-fs-repo-migrations
• Fetch the source code of the individual migrations from their specific Git tags, like upstream intends
• Enable tests for some migrations
• Check that the migrations don't crash on startup
• Mark two broken migrations as broken. They are not compatible with the latest Go versions and upstream is not interested in fixing this
• Change code to allow most updates to be done by only changing three lines (add new version and change git tag and hash)
• Add a stub for any disabled or broken migration to prevent downloading unsigned binaries from the internet, see fs-repo-migrations is difficult to package ipfs/fs-repo-migrations#148 (comment) and Implement trustless and verified HTTP retrieval ipfs/fs-repo-migrations#188
• Use lib.getExe instead of hardcoding the binary name in the kubo NixOS module
• Use substituteInPlace with --replace-fail instead of --replace

Things done

• Built on platform(s)
  • x86_64-linux
  • aarch64-linux
  • x86_64-darwin
  • aarch64-darwin
• For non-Linux: Is sandboxing enabled in nix.conf? (See Nix manual)
  • sandbox = relaxed
  • sandbox = true
• Tested, as applicable:
  • NixOS test(s) (look inside nixos/tests)
  • and/or package tests
  • or, for functions and "core" functionality, tests in lib/tests or pkgs/test
  • made sure NixOS tests are linked to the relevant packages
• Tested compilation of all packages that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD". Note: all changes have to be committed, also see nixpkgs-review usage
• Tested basic functionality of all binary files (usually in ./result/bin/)
• 24.11 Release Notes (or backporting 23.11 and 24.05 Release notes)
  • (Package updates) Added a release notes entry if the change is major or breaking
  • (Module updates) Added a release notes entry if the change is significant
  • (Module addition) Added a release notes entry if adding a new NixOS module
• Fits CONTRIBUTING.md.

---

Add a 👍 reaction to pull requests you find important.

[Luflosi]

I decided to now also fetch the source of each migration from their respective git tag, as upstream intended.

[Luflosi]

I resolved the conflict.

[Mayeu]

Beside a now needed rebase, what is needed for this to be merged to the repo?

Kubo is currently releasing a RC for the v0.32 and this PR is needed since the PR for upgrading to v0.30 has been open (more than 1 month ago now).

@Luflosi I guess you don't have merge right for this?
@elitak do you have merge right? If so, what's needed for this PR to be merged?

[gileri]

Tested to migrate from repo version 15 to 16, works fine, thanks !
Code looks good, but I'm still new, a second look would do well.

Trivial rebase still needed.

[Luflosi]

Beside a now needed rebase, what is needed for this to be merged to the repo?

I rebased. This should be ready for merging.

I guess you don't have merge right for this?

No.

Code looks good, but I'm still new, a second look would do well.

Thanks.

[Mayeu]

I guess you don't have merge right for this?

No.

Then I guess it's time to poke random people to find somebody with write access? :/

@wegank: I see that you are a member of the NixOS org, would you be able to merge this PR?

[Mayeu]

Thank you @wegank 🙏

[Luflosi]

Thanks!