Added nix Flake check to flake.yml

[9glenda]

The nix flake check Command Tests rather the nix package builds in all supported systems and checks formatting.
This is a follow up to #293. There I was stating that shellcheck is executed through github actions which is not the case because of only running nix build.

[9glenda]

I will force push with a new commit message and then convert to a normal pull request

[9glenda]

This will add extra time for the checks to run since it's testing way more then just the nix build. But in my opinion that's not as important as ensuring the code does not accidentally break something

[cafkafk]

This will add extra time for the checks to run since it's testing way more then just the nix build. But in my opinion that's not as important as ensuring the code does not accidentally break something

I mean we already have quite a heavy setup with unit-tests right now, so it probably won't be much of a difference.

[9glenda]

This will add extra time for the checks to run since it's testing way more then just the nix build. But in my opinion that's not as important as ensuring the code does not accidentally break something

I mean we already have quite a heavy setup with unit-tests right now, so it probably won't be much of a difference.

In my personal projects with heavy tests I used the github auto merge feature maybe you want to take a look at it but there could be issues with the flake.yml action not being a check and just a github action

[9glenda]

Time reported by the github action:

Action	Time
nix build	4min
nix flake check	4min

which means 4min extra time. This should be fine. optionally we could remove the nix build because nix flake check also ensures building of the packages (with --all-systems on all supported targets). Or alternatively add --no-build to not build during the nix flake check.

[cafkafk]

optionally we could remove the nix build because nix flake check also ensures building of the packages (with --all-systems on all supported targets)

I mean this sounds sensible to do if we don't get anything out of build but waiting time.

[9glenda]

optionally we could remove the nix build because nix flake check also ensures building of the packages (with --all-systems on all supported targets)

I mean this sounds sensible to do if we don't get anything out of build but waiting time.

Ok I'm going to remove nix build

[cafkafk]

This LGTM, thanks for the contribution, merging 👍