New comment by ametisf on void-packages repository

https://github.com/void-linux/void-packages/pull/20136#issuecomment-599706556

Comment:
I don't see the whole error in your last comment so I can't tell exactly but Stack doesn't have to have the package you're trying to build it has to have all it's dependencies and it's not the case for matterhorn anyway so that won't work.

The error you get with cabal is caused by building it as a dynamically linked binary, all the haskell libraries are linked dynamicaly, and then you don't include them in the package, xbps goes to search for them and tells you it couldn't find any package providing those libraries. The solution is (since those libraries wouldn't be useful for anything else) to link the binary statically.

This made it build properly
```
diff --git a/srcpkgs/matterhorn/template b/srcpkgs/matterhorn/template
index 83dbcd0aac..95681b649c 100644
--- a/srcpkgs/matterhorn/template
+++ b/srcpkgs/matterhorn/template
@@ -16,7 +16,7 @@ nopie_files="/usr/bin/matterhorn"
 do_build() {
        rm -f cabal.project
        cabal new-update
-       cabal new-build -j --enable-shared --enable-executable-dynamic --ghc-options=-dynamic
+       cabal new-build --jobs="${XBPS_MAKEJOBS}" --disable-executable-dynamic
 }

 do_install() {
```
but there are more things that should be fixed about your template, definitely installing with `vbin~"$(find ...)"` is a bad idea, either change it to the exact location of the output binary or better use the `cabal new-install` subcommand if it's possible to give it a `$DESTDIR`.