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nixosTest: Force system.nixos.revision constant

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nixos tests are blended with other system configurations, hence
their settings must be either enforced or defaulted.

This particular setting is set via lib.nixosSystem as
`system.nixos.revision = final.mkIf (self ? rev) self.rev;` which would
mean that without this change no flake generated nixos could be blended
with nixos testing.

This setting was made previously constant in
169c6b4b1478a3a0c823c99ea39d4082f76a2708 in order to avoid pointless
rebuilds of the testing VMs, but was set without enforcing it.

(cherry picked from commit 8bbdff45816c657f679cd77c0a0dbca534a85bf3)
This commit is contained in:
David Arnold 2021-06-20 23:29:26 -05:00 committed by github-actions[bot]
parent 3c6f3f84af
commit 1fd5950faa
1 changed files with 1 additions and 1 deletions
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2
nixos/lib/build-vms.nix
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@ -41,7 +41,7 @@ rec {
# The human version (e.g. 21.05-pre) is left as is, because it is useful # The human version (e.g. 21.05-pre) is left as is, because it is useful
# for external modules that test with e.g. nixosTest and rely on that # for external modules that test with e.g. nixosTest and rely on that
# version number. # version number.
config.system.nixos.revision = "constant-nixos-revision"; config.system.nixos.revision = mkForce "constant-nixos-revision";
} }
{ key = "nodes"; _module.args.nodes = nodes; } { key = "nodes"; _module.args.nodes = nodes; }
] ++ optional minimal ../modules/testing/minimal-kernel.nix; ] ++ optional minimal ../modules/testing/minimal-kernel.nix;