treewide: resholve everything, big refactor gamescope-session

[K900]

This basically gives us a working vendor flavored gamescope-session with no (as far as I've found) functional regressions, and also some improvements (powerbuttond, Steam as default URL handler, non-broken portals pending 1.18 in nixpkgs). Probably best viewed commit by commit, though the last one is big.

---

TODO

• Verify OOBE works using the test iso

[pongo1231]

Fixes #158 on my end

[samueldr]

Some notes and changes, not "done" yet, need to test and looks at some bits more carefully.

[samueldr]

I suppose I'm missing something from the initial WIP, but did this end-up needlessly doing the same thing in the first and last branch?

[K900]

I didn't change this bit at all.

[K900]

But yes.

[misuzu]

Doesn't build for me (NixOS/nixpkgs@e35dcc0, 011a3f5)

python2.7-oildev-unstable> pyext/posixmodule.c: In function ‘posix_close_’:
python2.7-oildev-unstable> pyext/posixmodule.c:1985:10: warning: implicit declaration of function ‘_PyVerify_fd’ [8;;https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html#index-Wimplicit-function-declaration-Wimp
licit-function-declaration8;;]
python2.7-oildev-unstable>  1985 |     if (!_PyVerify_fd(fd))
python2.7-oildev-unstable>       |          ^~~~~~~~~~~~
python2.7-oildev-unstable> FATAL: FAIL _test/unit/pyext/posix_test.py.log
python2.7-oildev-unstable> /nix/store/vr6wwdxkmyy44sg0gwxi10b8fc5zhwz0-stdenv-linux/setup: line 144: pop_var_context: head of shell_variables not a function context
error: builder for '/nix/store/mzca1wr9jrll1gwxgjblfs8n71qrmw8m-python2.7-oildev-unstable-2021-07-14.drv' failed with exit code 1;
       last 10 log lines:
       >   215 | # define _XOPEN_SOURCE  700
       >       |
       > OK _test/unit/pyext/libc_test.py.log
       >   (pyext/setup_posix.py) -> posix_.so
       > pyext/posixmodule.c: In function ‘posix_close_’:
       > pyext/posixmodule.c:1985:10: warning: implicit declaration of function ‘_PyVerify_fd’ [8;;https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html#index-Wimplicit-function-declaration-Wimplicit-function-dec
laration8;;]
       >  1985 |     if (!_PyVerify_fd(fd))
       >       |          ^~~~~~~~~~~~
       > FATAL: FAIL _test/unit/pyext/posix_test.py.log
       > /nix/store/vr6wwdxkmyy44sg0gwxi10b8fc5zhwz0-stdenv-linux/setup: line 144: pop_var_context: head of shell_variables not a function context
       For full logs, run 'nix log /nix/store/mzca1wr9jrll1gwxgjblfs8n71qrmw8m-python2.7-oildev-unstable-2021-07-14.drv'.
error: 1 dependencies of derivation '/nix/store/ari8af043m8lkrn8i597dbadj3qnlvq3-resholve-0.9.0.drv' failed to build

[K900]

Resholve is currently busted on unstable, try latest unstable-small

[jovian-experiments]

Hi there!

In the next few minutes a fresh preview of the docs for f7efa70 will be available at https://www-jovian.github.io/Jovian-NixOS-PR167/.

See also the generated diff at: https://github.com/www-jovian/Jovian-NixOS-PR167

Cheers!

---

Beep-boop, this comment was auto-generated for www-jovian.

[K900]

Tested the OOBE last night, works fine.

[K900]

Also tested Vampire Survivors, the game that the comment in the upstream unit file says made them log to a file instead of the journal, and that also runs fine now.

[misuzu]

The "verifying installation" thing is gone for me

[samueldr]

Looks like everything works as expected.