nix: make DetSys installer the default (#2447) #6684

Job	Run time
build-devbox (ubuntu-latest)	19s
build-devbox (macos-13)	58s
Spell Check with Typos	0s
Test Flake Build	0s
golangci-lint (ubuntu-latest)	46s
golangci-lint (macos-13)	4m 17s
auto-nix-install (ubuntu-latest, true)	48s
auto-nix-install (ubuntu-latest, false)	48s
test (is-main, ubuntu-latest, project-tests-only, 2.12.0)	10m 26s
test-nix-versions (ubuntu-latest, 2.15.1)	45s
auto-nix-install (macos-13, true)	2m 16s
test (is-main, ubuntu-latest, project-tests-only, 2.19.2)	8m 22s
test-nix-versions (ubuntu-latest, 2.16.1)	43s
auto-nix-install (macos-13, false)	2m 22s
test (is-main, ubuntu-latest, project-tests-only, 2.20.1)	8m 41s
test-nix-versions (ubuntu-latest, 2.17.0)	40s
test (is-main, ubuntu-latest, project-tests-off, 2.12.0)	8m 7s
test-nix-versions (ubuntu-latest, 2.18.0)	43s
test (is-main, ubuntu-latest, project-tests-off, 2.19.2)	8m 56s
test-nix-versions (ubuntu-latest, 2.19.2)	39s
test (is-main, ubuntu-latest, project-tests-off, 2.20.1)	9m 15s
test-nix-versions (ubuntu-latest, 2.24.7)	42s
test-nix-versions (macos-13, 2.15.1)	2m 23s
test-nix-versions (macos-13, 2.16.1)	3m 15s
test-nix-versions (macos-13, 2.17.0)	3m 23s
test-nix-versions (macos-13, 2.18.0)	2m 4s
test-nix-versions (macos-13, 2.19.2)	2m 54s
test-nix-versions (macos-13, 2.24.7)	4m 17s
	1h 28m 49s

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