haskell.nix seems to get confused between different repositories

[andreabedini]

This happened

❯ nix build --override-input cardanoHaskellPackageRepo path:/home/andrea/work/cardano-haskell-package-repo/_repo
warning: Git tree '/home/andrea/work/cardano-node' is dirty
warning: not writing modified lock file of flake 'git+file:///home/andrea/work/cardano-node':
• Updated input 'cardanoHaskellPackageRepo':
    'github:input-output-hk/cardano-haskell-package-repo/d3aaed5fedc48ead7e606e2ccd0a3895c7bb6c7a' (2022-09-01)
  → 'path:/home/andrea/work/cardano-haskell-package-repo/_repo?lastModified=1662560110&narHash=sha256-9D%2fhQw%2f5NMiIhVGrDx4bqJK4ag7PLbuHSy9q%2f+mAORs=' (2022-09-07)
trace: To make project.plan-nix for cardano-node a fixed-output derivation but not materialized, set `plan-sha256` to the output of the 'calculateMaterializedSha' script in 'passthru'.
trace: To materialize project.plan-nix for cardano-node entirely, pass a writable path as the `materialized` argument and run the 'updateMaterialized' script in 'passthru'.
trace: To make project.plan-nix for haskell-project a fixed-output derivation but not materialized, set `plan-sha256` to the output of the 'calculateMaterializedSha' script in 'passthru'.
trace: To materialize project.plan-nix for haskell-project entirely, pass a writable path as the `materialized` argument and run the 'updateMaterialized' script in 'passthru'.
error: builder for '/nix/store/rimmd38cdqp1c2bjr4yn1gx9y46syqhm-plutus-core-1.0.0.0-3.cabal.drv' failed with exit code 1;
       last 7 log lines:
       >
       > trying https://hackage.haskell.org/package/plutus-core-1.0.0.0/revision/3.cabal
       >   % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
       >                                  Dload  Upload   Total   Spent    Left  Speed
       >   0    59    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
       > curl: (22) The requested URL returned error: 404
       > error: cannot download plutus-core-1.0.0.0-3.cabal

/home/andrea/work/cardano-haskell-package-repo/_repo is a built haskell repository (so it has 01-index.tgz etc).
Somehow haskell.nix tries to fetch https://hackage.haskell.org/package/plutus-core-1.0.0.0/revision/3.cabal which instead should be available in _repo/index/plutus-core/1.0.0.0/plutus-core.cabal.

[andreabedini]

At a first look, I think hspkg-builder does not support package revisions in a different repository than hackage.

[hamishmack]

Is there an easy way to reproduce this issue?

[andreabedini]

WIP in #1650

[andreabedini]

Closed by #1775