Extend new dogfooding ci job to linux and macos

[jneira]

• The motivation is clear: cabal HEAD should be able to install istself including its dependencies. It wuld cover the build of important libs for the ecosystem like network
• The job was initially added for windows by @Mikolaj

cabal/.github/workflows/windows.yml

Line 72 in 69f6228

test-windows-8_6_5-dogfood:

cabal/.github/workflows/windows.yml

Line 168 in 69f6228

test-windows-8_10_4-dogfood:

• Ideally those jobs should reuse the cabal excutable buils in the previous step. The usual way is upload and download it as a workflow artifact

[Mikolaj]

Actually, as @hasufell rightly points out, we'd benefit from extending this to all architectures suppported by cabal, either on GHA or gitlab CI or whenever else we can set it up.

[hasufell]

IMO, development, including the majority of CI should happen on gitlab, but that's just my opinion.

Right now the gitlab repo is a mirror and there are no tests run by default. When the next release is imminent, we'll have to fix a bazillion of issues again, because the gitlab CI part isn't actively maintained.

[jneira]

ci plumbing is not very popular but i think it would not be difficult to extend and clean those jobs

[andreabedini]

After #7952 we are now testing dogfooding on linux, macos and windows. I belive this can be closed.

Sorry, I was grossly mistaken. We still need to do this.