chore: pin go_1_26 to nixos-25.11#84
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In nixpkgs-unstable, go_1_26 is a critical package with many reverse dependencies, slowing its updates. nixos-25.11 has fewer dependents and updates the toolchain faster, so source it from there via overlay.
alecron
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May 18, 2026
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Pull request overview
Pins the Go 1.26 toolchain used by this repo’s Nix flake to come from the nixos-25.11 branch (via an overlay), keeping Go closer to upstream while leaving the rest of nixpkgs on nixpkgs-unstable.
Changes:
- Added a new flake input (
nixpkgs-25-11) pointing atnixos-25.11. - Introduced an overlay to source
go_1_26fromnixpkgs-25-11and applied it alongside the existing overlay. - Updated
flake.lockto pin the additionalnixpkgs-25-11input.
Reviewed changes
Copilot reviewed 1 out of 2 changed files in this pull request and generated 2 comments.
| File | Description |
|---|---|
| flake.nix | Adds nixpkgs-25-11 input and an overlay to override go_1_26 with the version from nixos-25.11. |
| flake.lock | Pins the newly added nixpkgs-25-11 input revision/hash. |
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mateobur
approved these changes
May 18, 2026
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In nixpkgs-unstable,
go_1_26is treated as a critical package due to the large number of reverse dependencies, so updates land slowly.nixos-25.11has far fewer dependents on the Go toolchain, so it tracks new Go releases much faster.Sourcing
go_1_26fromnixos-25.11via overlay keeps the dev shell closer to upstream Go without bumping the rest ofnixpkgs.