nix: flakify the project #2383

Job	Run time
Build Linux (Stack)	14m 52s
Build MacOS (Stack)	22m 57s
Build Windows (Stack)	21m 11s
Build MacOS (Nix)	7m 14s
Build Linux (Cabal, GHC 9.0.2)	16m 58s
Get FreeBSD build from CirrusCI	5m 11s
Build Linux (Cabal, GHC 9.2.4)	14m 49s
Prepopulate Nix cache for Linux runners	1m 52s
Build aarch64 (Cabal, GHC ${{ matrix.ghc }})	0s
Lint & check code style	1m 27s
Test (Nix)	5m 40s
Build Linux static (Nix)	1m 17s
Test memory (Nix)	1m 43s
Test PG 9.6 (Nix)	4m 5s
Test PG 10 (Nix)	3m 52s
Test PG 11 (Nix)	4m 39s
Test PG 12 (Nix)	4m 6s
Test PG 13 (Nix)	3m 52s
Test PG 14 (Nix)	3m 49s
Test PG 15 (Nix)	3m 55s
Test PG 16 (Nix)	3m 52s
Prepare release	0s
Release on Docker Hub	0s
Release on GitHub	0s
Release Arm Builds on Docker Hub	0s
Remove copied files from server	0s
	2h 27m 21s

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