mimemagic VS gemstash

If you're curious, here's how I solved it for ruby back in the day. Still used magic bytes, but added an overlay on top of the freedesktop.org DB: https://github.com/mimemagicrb/mimemagic/pull/20

Get it directly from github commit.

[AO3-6152] - Due to a licensing incident with a Rails dependency known as mimemagic, we had to update Rails to 5.2.5 and mimemagic to 0.3.6.

I don't think mimemagic works on Windows after the drama. I opened a PR for that a month ago but no one seems to care: https://github.com/mimemagicrb/mimemagic/pull/141

"License, motherfucker"

I know the vulgarity of the statements is tongue in cheek, but this one has been reinforced lately by the "MIME Magic" debacle[1], mama mia.

[1] https://github.com/mimemagicrb/mimemagic/issues/98

it has a licensing issue

https://github.com/mimemagicrb/mimemagic/commit/749a7e59de480b7c0373acc4f8ceb4444352ba46#diff-2ea7e2364883967953ab518a8316b639e612b8a6f20eadb7b97939d91c8e2612

On the other hand mimemagic provides by_magic https://github.com/mimemagicrb/mimemagic#usage which does detection by heuristic. It's a radically different method for a radically different use case.

Anyway, I created a PR addressing new Mimemagic not working on Windows https://github.com/mimemagicrb/mimemagic/pull/141

Someone broke the internet for rails https://github.com/mimemagicrb/mimemagic/issues/98

Sorry to hear. I'd say, never "bundle install" in the init script. If using docker, make "bundle install" an intermediate container. If you have your own servers, try network FS sharing your deps (and see if you're ok with the "require" latencies). Alternatively, use a gem cache proxy. You can use "geminabox" with a rubygems mirror, if you can tolerate the space and long mirroring times, or use a purposed "middleman" proxy, like gemstash, or nexus if your company is multilang.