Fix postgresql-libpq-configure #2370
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It needs posgresql and pg_config, but does not explicitly list the dependency in the `.cabal` file.
With this change both `use-pkg-config` on and off work. Tested with:
```
nix build --impure --expr '((import ./. {}).pkgs-unstable.haskell-nix.hackage-package {compiler-nix-name="ghc9122"; name = "postgresql-libpq"; cabalProjectLocal = "package postgresql-libpq\n flags: -use-pkg-config"; }).components.library'
nix build --impure --expr '((import ./. {}).pkgs-unstable.haskell-nix.hackage-package {compiler-nix-name="ghc9122"; name = "postgresql-libpq"; cabalProjectLocal = "package postgresql-libpq\n flags: +use-pkg-config"; }).components.library'
```
Fixes #2281
thomasjm
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Jun 4, 2025
This reverts commit 463e08c.
thomasjm
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Jun 23, 2025
This reverts commit 463e08c.
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It needs posgresql and pg_config, but does not explicitly list the dependency in the
.cabalfile.With this change both
use-pkg-configon and off work. Tested with:Fixes #2281