.hyper_plugins and .hyper.js location when XDG_CONFIG_HOME is not set (or is set but Hyper still searches for wrong location) and potential fix

• [ x] I am on the latest Hyper.app version
• [ x] I have searched the issues of this repo and believe that this is not a duplicate

I found at least https://github.com/vercel/hyper/issues/6616 (for Mac). Nonetheless, I am opening this issue for Linux and as a clarification on the root cause.

• (irrelevant in this case) OS version and name: Solus 4.3 Fortitude
• Hyper.app version: 3.0.0
• (irrelevant in this case) Link of a Gist with the contents of your .hyper.js:
• Relevant information from devtools (CMD+ALT+I on macOS, CTRL+SHIFT+I elsewhere):
• The issue is reproducible in vanilla Hyper.app: with downloaded Hyper-3.3.0.AppImageand not "patched" cloned repo

Issue

Related to https://github.com/vercel/hyper/issues/6616

TLDR: relevant spot is https://github.com/vercel/hyper/blob/ef5419b5200a04b244e9d507baf6f4e5cf5bad9c/app/config/paths.ts#L16

The downloaded Hyper-3.3.0.AppImage creates $HOME/.config/Hyper (capitalized Hyper)

• probably it checks for $HOME/.config/hyper (lowercase h) as per
  https://github.com/vercel/hyper/blob/ef5419b5200a04b244e9d507baf6f4e5cf5bad9c/app/config/paths.ts#L16

  • it fails to find $HOME/.config/Hyper (searches for $HOME/.config/hyper (lowercase h))
    • then creates both .hyper_plugins and .hyper.js also if XDG_CONFIG_HOME is set

• same behavior found in cloned repo

  • until when https://github.com/vercel/hyper/blob/ef5419b5200a04b244e9d507baf6f4e5cf5bad9c/app/config/paths.ts#L16 is updated to ? join(process.env.XDG_CONFIG_HOME, 'Hyper') (capitalized Hyper)

At this point both .hyper_plugins and .hyper.js are correctly created in XDG_CONFIG_HOME/Hyper, correct configuration and plugins are loaded.

I pushed the fix to my fork. If all this is correct (both Linux and Mac), I'd like to send a PR.

Start in app/config/paths.ts at the XDG_CONFIG_HOME path logic and compare the searched directory with the Hyper-3.3.0.AppImage behavior. Reproduce with and without XDG_CONFIG_HOME, then verify that .hyper_plugins and .hyper.js are created and loaded from XDG_CONFIG_HOME/Hyper with the expected capitalization.