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docs(gotchas): Overriding libssh2 #411

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27 changes: 27 additions & 0 deletions doc/gotchas.md
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@@ -0,0 +1,27 @@
# Gotchas

{#libssh2}
## Overriding `libssh2` Haskell library

```nix
# In `haskellProjects.default`
{
settings = {
libssh2 = {
broken = false;
# Overriding the package with `packages.libssh2.source = "0.2.0.9"` results in infinite recursion.

# Possibly having to do with `cabal2nix` not understading that [`libssh2` in `pkgconfig-depends` of `libssh2.cabal`](https://github.com/portnov/libssh2-hs/blob/bf7cbe643c7f4fb4fad3963705feb8351471eb01/libssh2/libssh2.cabal#L70)
# is not self-referential.
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Can you move this above as Markdown paragraph below the heading? Without reading the code, the 'gotcha' section is stripped of any explanation as to its existance.

custom = (p: p.overrideAttrs (oa: rec {
version = "0.2.0.9";
src = pkgs.fetchzip {
url = "mirror://hackage/${oa.pname}-${version}/${oa.pname}-${version}.tar.gz";
sha256 = "sha256-/zzj11iOxkpEsKVwB4+IF8dNZwEuwUlgw+cZYguN8QI=";
};
}));
};
};
}
```

5 changes: 5 additions & 0 deletions doc/package-set.md
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Expand Up @@ -60,3 +60,8 @@ Finally, you can externalize this `ghc810` package set as either a flake-parts m
## Examples

- https://github.com/nammayatri/common/pull/11/files

## See also

- [[gotchas]]