nixpkgs-url

• This repository is archived, the reason is described in #24
• This tool is unnecessary, at least in Nix Flakes
• For an example on 2023-08-06, I use github:NixOS/nixpkgs/nixpkgs-unstable or github:NixOS/nixpkgs/nixos-unstable and nix flake update --commit-lock-file

For my personal use.

I'm a new to the Nix ecosystem.
(If you know a better way, please let me know!)

I have flake.nix and default.nix in many repositories.
They use different nipkgs url from the created timing.
Personally, I use the latest nixpkgs ref. But I avoid to specify unstable.
When I want to bump it, I always visit the nixpkgs repository and copy and paste. It is a tedious task.

Installation

Prebuilt binaries

> curl -L https://github.com/kachick/nixpkgs-url/releases/latest/download/nixpkgs-url_Linux_x86_64.tar.gz | tar xvz -C ./ nixpkgs-url
> ./nixpkgs-url --version
...

In Nix, you can skip installation steps

> nix run github:kachick/nixpkgs-url -- --version
nixpkgs-url dev (rev) # unknown
> nix run github:kachick/nixpkgs-url/v0.2.4 -- detect --current
...(With specific version)

go install

> go install github.com/kachick/nixpkgs-url/cmd/nixpkgs-url@latest
go: downloading...
> ${GOPATH:-"$HOME/go"}/bin/nixpkgs-url --version
nixpkgs-url dev (rev) # unknown

Usage

Providing two subcommands. I'm using detect in CI and bump in local.

> nixpkgs-url detect --current
e57b65abbbf7a2d5786acc86fdf56cde060ed026

> nixpkgs-url bump && git commit -m 'Bump nixpkgs to latest' *.nix
[main 213d1bf] Bump nixpkgs to latest
 1 file changed, 1 insertion(+), 1 deletion(-)

NOTE

• I guess there are many other syntax patterns in Nix files that I have not used. This code will not care about them.
• I don't know nix-community/go-nix will fit or not.
• I don't know if Nix provides this feature with the CLI or not.