libzint isn't found even when installed

[fogti]

passes/src/model/meson.build

Line 3 in d151ab2

libzint = compiler.find_library('libzint', dirs: '/app/lib')

I installed (lib)zint on freebsd, which even installs cmake config files, but it isn't found unless I change the line above to

libzint = dependency('zint')

[fogti]

(perhaps, the code should fallback to a possible global version if it can't find an internal one)

[fgaz]

FYI in the NixOS package we have a similar workaround:

https://github.com/NixOS/nixpkgs/blob/4cba8b53da471aea2ab2b0c1f30a81e7c451f4b6/pkgs/by-name/pa/passes/package.nix#L31

Falling back to a global version may help other distros too