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feat(nix): adapt nix.conf validation for different Nix versions

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This commit updates the nix.conf validation logic to accommodate
different versions of Nix. It introduces a conditional assignment
of the `showCommand` variable, which determines the appropriate
command to use based on the Nix version. For versions at least
"2.20pre", it uses "config show"; otherwise, it falls back to
"show-config". This change ensures compatibility across various
Nix releases.
This commit is contained in:
Mark Sisson 2024-03-02 18:51:25 -06:00
parent 8a15cb36ff
commit 3397ab3b77
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GPG key ID: 517B9F869E22BFBE
1 changed files with 6 additions and 2 deletions
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8
modules/nix/default.nix
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@ -62,13 +62,17 @@ let
if pkgs.stdenv.hostPlatform != pkgs.stdenv.buildPlatform then ''
echo "Ignoring validation for cross-compilation"
''
else ''
else
let
showCommand = if isNixAtLeast "2.20pre" then "config show" else "show-config";
in
''
echo "Validating generated nix.conf"
ln -s $out ./nix.conf
set -e
set +o pipefail
NIX_CONF_DIR=$PWD \
${cfg.package}/bin/nix show-config ${optionalString (isNixAtLeast "2.3pre") "--no-net"} \
${cfg.package}/bin/nix ${showCommand} ${optionalString (isNixAtLeast "2.3pre") "--no-net"} \
${optionalString (isNixAtLeast "2.4pre") "--option experimental-features nix-command"} \
|& sed -e 's/^warning:/error:/' \
| (! grep '${if cfg.checkConfig then "^error:" else "^error: unknown setting"}')