Updating HB to a non-master branch produces Nix error

[geo2a]

I've made a change to HB and wanted to check it in Booster's CI, so I ran ./scripts/update-haskell-backend.sh BRANCH, committed and pushed. The CI fails with:

error:
       … while calling the 'derivationStrict' builtin

         at /builtin/derivation.nix:9:12: (source not available)

       … while evaluating derivation 'ghc-shell-for-hs-backend-booster-0.0.0-0'
         whose name attribute is located at /nix/store/mbz4hixfgxq5b6vc0k3pp2iglcd4c353-source/pkgs/stdenv/generic/make-derivation.nix:303:7

       … while evaluating attribute 'NIX_GHC' of derivation 'ghc-shell-for-hs-backend-booster-0.0.0-0'

         at /nix/store/mbz4hixfgxq5b6vc0k3pp2iglcd4c353-source/pkgs/development/haskell-modules/generic-builder.nix:676:9:

          675|         LOCALE_ARCHIVE = lib.optionalString (stdenv.hostPlatform.libc == "glibc") "${buildPackages.glibcLocales}/lib/locale/locale-archive";
          676|         "NIX_${ghcCommandCaps}" = "${ghcEnv}/bin/${ghcCommand}";
             |         ^
          677|         "NIX_${ghcCommandCaps}PKG" = "${ghcEnv}/bin/${ghcCommand}-pkg";

       (stack trace truncated; use '--show-trace' to show the full trace)

       error: Cannot find Git revision '59b5b34de1119d3da2d3b9cc2a4ffd2abbddb571' in ref 'refs/heads/master' of repository 'https://github.com/runtimeverification/haskell-backend.git'! Please make sure that the rev exists on the ref you've specified or add allRefs = true; to fetchGit.

The relevant part seems to be at the end: Cannot find Git revision '59b5b34de1119d3da2d3b9cc2a4ffd2abbddb571' in ref 'refs/heads/master' of repository 'https://github.com/runtimeverification/haskell-backend.git'! Please make sure that the rev exists on the ref you've specified or add allRefs = true; to fetchGit. Here's the CI run.

I have not running nix build locally, but I did try kup install kontrol --override BOOSTER BRANCH, and that gives the same error.

Perhaps we need to give some more parameters to stacklock2nix? Or modify the lock file itself in a different way?

[goodlyrottenapple]

Here is the issue in stacklock2nix: cdepillabout/stacklock2nix#38

[goodlyrottenapple]

A temporary fix has been merged in #376, however, we should keep this issue open and revert #376, if/when cdepillabout/stacklock2nix#38 is resolved.

[geo2a]

stacklock2nix has been update and the workaround has been reverted: #407