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Hamish Mackenzie
2576a948b5
* Improve support for external Hackage repositories This change builds #535. `repository` blocks in `cabal.project` parsed and `cabal` is used to automatically downloaded them. Then `hackage-to-nix` is used to produce the nix required. To make it work with restricted eval (on hydra for instance) we need to include a sha256 like this: ``` repository ghcjs-overlay url: https://input-output-hk.github.io/hackage-overlay-ghcjs secure: True root-keys: key-threshold: 0 --sha256: sha256-EPlLYPmIGtxeahlOspRzwJv+60N5mqrNC2BY4jZKceE= ``` To find the correct `sha256` put in an invalid one and attempt a build.
Tests for extra Hackage functionality
This directory contains two packages, external-package-demo and external-package-user, the
second one depends on the first one. Both packages were created with cabal init.
external-package-demo was uploaded to local Hackage at localhost and 01-index.tar.gz from that
Hackage was downloaded to this directory. Then the index file was processed with hackage-to-nix,
the result is in hackage/ directory.
The tests check that cabalProject' is able to construct plan with dependencies from extra Hackage
and then build the package itself.