Activate export env

[bollwyvl]

This adds activate/deactivate scripts for downstreams that will be expecting $LIBARCHIVE to find the .so/.dylib.

[conda-forge-linter]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe) and found it was in an excellent condition.

[jakirkham]

Sure, if it helps. Feel free to add yourself as a maintainer as well.

So the find_library call doesn't work? Honestly wouldn't be surprised, but figured I'd ask.

[jakirkham]

Though it might be worth considering adding this to these scripts to that Python package's conda recipe instead.

[bollwyvl]

Thanks for the review!

So the find_library call doesn't work? Honestly wouldn't be surprised, but figured I'd ask.

Indeed it does not... in my hacked-up staged-recipes with libarchive-c and diffoscope and this recipe as in this PR, I'm getting good builds % my screw-ups...

Though it might be worth considering adding this to these scripts to that Python package's conda recipe instead.

Hm, in trolling about, I haven't found anything other than that particular downstream which is expecting that environment. @msarahan also suggested patching that check... what is the greater sin?

Anyhow... I'll PR with that change in place. Wasn't excited about hacking this one anyway!

[bollwyvl]

In some more looking, I've found a number of other libraries that do wonky things around finding libarchive for some reason, so let's close this one!