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haskell.nix/test/shell-for
Hamish Mackenzie 2b7d93baf6 Allow package-name:sublib-name in build-depends (#963)
With cabal 3 it should be possible to reference a sublib in the
`build-depends` of a `.cabal` file using `package-name:sublib-name`

The `cabal-sublib` test is updated to include the new type syntax
and a fix is included for the component builder.

We will need to update `plan-to-nix` in `nix-tools` as well.
For now the work around is to use a module to add the sublib to
`depends` (see `test/cabal-sublib/default.nix`).

Without this fix the `cabal-sublib:slib` was not found by
`setup configure` because only `--dependency=slib=cabal-sublib-...`
was passed.  The fix is to also pass
`--dependency=cabal-sublib:slib=cabal-sublib-...`.
2021-01-08 23:11:16 +13:00
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