Pulling SRP from wrong repository

[jasagredo]

Describe the bug

I'm not sure how I triggered this, but I got the following after doing a major rebase of my current branch:

➜ cabal build all
remote: Enumerating objects: 491, done.
remote: Counting objects: 100% (259/259), done.
remote: Compressing objects: 100% (35/35), done.
remote: Total 491 (delta 220), reused 233 (delta 215), pack-reused 232 (from 2)
Receiving objects: 100% (491/491), 180.39 KiB | 1.69 MiB/s, done.
Resolving deltas: 100% (240/240), completed with 71 local objects.
From github.com:IntersectMBO/ouroboros-consensus
 + 7993903f5...c1fafb367 bolt12/reusable-diffusion-3 -> origin/bolt12/reusable-diffusion-3  (forced update)
 * [new branch]          coot/public-network-state -> origin/coot/public-network-state
 + 2e5d4d875...6b0701bc3 fraser-iohk/one-era-gen-tx-id-bytestring -> origin/fraser-iohk/one-era-gen-tx-id-bytestring  (forced update)
 * [new tag]             release-ouroboros-consensus-0.22.0.0 -> release-ouroboros-consensus-0.22.0.0
 * [new tag]             release-ouroboros-consensus-cardano-0.21.0.0 -> release-ouroboros-consensus-cardano-0.21.0.0
 * [new tag]             release-ouroboros-consensus-diffusion-0.19.0.0 -> release-ouroboros-consensus-diffusion-0.19.0.0
 * [new tag]             release-ouroboros-consensus-protocol-0.10.0.0 -> release-ouroboros-consensus-protocol-0.10.0.0
fatal: Could not parse object 'fb9b71f3bc33f8de673c6427736f09bf7972e81f'.

with this cabal.project excerpt:

...

source-repository-package
  type: git
  location: https://github.com/IntersectMBO/cardano-base.git
  tag: fb9b71f3bc33f8de673c6427736f09bf7972e81f
  subdir:
    cardano-crypto-class
  --sha256: sha256-ExQ497FDYlmQyZaXOTddU+KraAUHnTAqPiyt055v0+M=

The output seems to indicate it tried to pull that reference from the project git repo, instead of from the one indicated in the SRP.

A rm -rf dist-newstyle and cabal build all succeeded in pulling the right git refs from the right repos.

To Reproduce

I don't have a reproducer yet.

System information

• Operating system: Windows 11 24H2, MSYS2 CLANG64
• cabal 3.12.1.0, ghc 9.6.6

[philderbeast]

I see the --sha256: comment. If that is for haskell.nix, Updo can generate a sha256map.

[jasagredo]

It is indeed for haskell.nix. Can Updo generate the sha256 without having Nix on the system? I am on Windows (which has no Nix) so I always struggle to generate those.

EDIT: Ah I see it ends up calling nix-prefetch-git so no luck this time :'(

[philderbeast]

Yes you're right, it calls nix-prefetch-git. I haven't tried getting nix-prefetch-git, the bash script, to work on Windows outside of nix. I expect it would be a challenge.