Stack doesn't install PO files properly

[volhovm]

There's a related problem here.
Distribution.Simple.I18N.GetText is common to work with locales and translations. It overrides cabal hooks in order to install .po files to /usr/share/locale/....
This feature still works well with stack 0.1.6.0, but not anymore in version 0.1.8.0. In 0.1.6.0 .po translations are copied to .stack-work/.../share/... on stack build, but with new version it doesn't happen.

[mgsloan]

Yes, stack build now invokes Setup.hs copy and register instead of running Setup.hs install. This means postCopy gets invoked instead of postInstall. Here's the issue that caused this change:
#1203 . IIRC, it's also what cabal install does?

Here's how to implement postInstall in terms of postCopy: ghcjs/ghcjs@d5c67ef

[mgsloan]

Please re-open if there's something stack can do better here. Unfortunately, there's not much we can do about the postInst / postCopy stuff.