ci: bump install-nix-action to v16

[montchr]

I noticed the automated builds have been failing for quite a while now, about 23 days.

https://github.com/cmacrae/emacs/actions/runs/1547228221

This run appears to be the first automated run that failed, and each automated run since has failed. Looks like it's getting stuck on some issue during the install-nix-action step. In my fork, I've seen similar errors, and I believe they went away when I updated to the latest version of the install-nix-action.

Here's the full error from the latest run:

/nix:
Error: unable to perform operation.  (-400)
    Error: unknown indexing state.
child_process.js:642
    throw err;
    ^

Error: Command failed: /Users/runner/work/_actions/cachix/install-nix-action/v13/lib/install-nix.sh
    at checkExecSyncError (child_process.js:621:11)
    at Object.execFileSync (child_process.js:639:15)
    at Object.<anonymous> (/Users/runner/work/_actions/cachix/install-nix-action/v13/lib/main.js:4:17)
    at Module._compile (internal/modules/cjs/loader.js:959:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:995:10)
    at Module.load (internal/modules/cjs/loader.js:815:32)
    at Function.Module._load (internal/modules/cjs/loader.js:727:14)
    at Function.Module.runMain (internal/modules/cjs/loader.js:1047:10)
    at internal/main/run_main_module.js:17:11 {
  status: 1,
  signal: null,
  output: [ null, null, null ],
  pid: 848,
  stdout: null,
  stderr: null
}

[montchr]

Even if this change fixes the install step, I think the patches also need updating. But that'd probably be best addressed in a new ticket/PR.

Also, see https://github.com/sagittaros/emacs-osx/issues/5 – looks like they're running into a similar or identical issue with patches.

https://github.com/montchr/emacs/runs/4659428174?check_suite_focus=true

emacs> patching sources
emacs> applying patch /nix/store/j9fa4phwrah4rwg3va7whlxljf8qbxba-fix-window-role.patch
emacs> patching file src/nsterm.m
emacs> Hunk #1 succeeded at 8619 (offset -259 lines).
emacs> applying patch /nix/store/nlgq5vra3c0r1snj0wbmd49r78pagi5j-no-titlebar.patch
emacs> patching file src/nsterm.m
emacs> Hunk #1 FAILED at 433.
emacs> Hunk #2 succeeded at 8347 (offset 42 lines).
emacs> 1 out of 2 hunks FAILED -- saving rejects to file src/nsterm.m.rej
error: builder for '/nix/store/4fi1q2cx2j06zbxh2x10bdgphn3q6700-emacs-29.0.50.drv' failed with exit code 1;
       last 10 log lines:
       > source root is source
       > patching sources
       > applying patch /nix/store/j9fa4phwrah4rwg3va7whlxljf8qbxba-fix-window-role.patch
       > patching file src/nsterm.m
       > Hunk #1 succeeded at 8619 (offset -259 lines).
       > applying patch /nix/store/nlgq5vra3c0r1snj0wbmd49r78pagi5j-no-titlebar.patch
       > patching file src/nsterm.m
       > Hunk #1 FAILED at 433.
       > Hunk #2 succeeded at 8347 (offset 42 lines).
       > 1 out of 2 hunks FAILED -- saving rejects to file src/nsterm.m.rej
       For full logs, run 'nix log /nix/store/4fi1q2cx2j06zbxh2x10bdgphn3q6700-emacs-29.0.50.drv'.
Error: Process completed with exit code 1.

[cmacrae]

Thanks for this! Yeah, I've been on hiatus for a while, dealing with real-life-things :)
I'll merge it for now and look at fixing forward on master for the patching issue 👍