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Don't send settings that depend on disabled experimental features to the daemon

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This fixes warnings like

   warning: Ignoring setting 'auto-allocate-uids' because experimental feature 'auto-allocate-uids' is not enabled
   warning: Ignoring setting 'impure-env' because experimental feature 'configurable-impure-env' is not enabled

when using the daemon and the user didn't actually set those settings.

Note: this also hides those settings from `nix config show`, but that
seems a good thing.
This commit is contained in:
Eelco Dolstra 2024-02-20 15:22:15 +01:00
parent d2c6a93bd5
commit 0acd783190
3 changed files with 10 additions and 6 deletions
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2
src/libutil/config-impl.hh
View file

@ -4,7 +4,7 @@
*
* Template implementations (as opposed to mere declarations).
*
* This file is an exmample of the "impl.hh" pattern. See the
* This file is an example of the "impl.hh" pattern. See the
* contributing guide.
*
* One only needs to include this when one is declaring a

4
src/libutil/config.cc
View file

@ -84,7 +84,9 @@ void AbstractConfig::reapplyUnknownSettings()
void Config::getSettings(std::map<std::string, SettingInfo> & res, bool overriddenOnly)
{
for (const auto & opt : _settings)
if (!opt.second.isAlias && (!overriddenOnly || opt.second.setting->overridden))
if (!opt.second.isAlias
&& (!overriddenOnly || opt.second.setting->overridden)
&& experimentalFeatureSettings.isEnabled(opt.second.setting->experimentalFeature))
res.emplace(opt.first, SettingInfo{opt.second.setting->to_string(), opt.second.setting->description});
}

10
tests/functional/experimental-features.sh
View file

@ -31,17 +31,19 @@ source common.sh
NIX_CONFIG='
experimental-features = nix-command
accept-flake-config = true
' nix config show accept-flake-config 1>$TEST_ROOT/stdout 2>$TEST_ROOT/stderr
grepQuiet "false" $TEST_ROOT/stdout
' expect 1 nix config show accept-flake-config 1>$TEST_ROOT/stdout 2>$TEST_ROOT/stderr
[[ $(cat $TEST_ROOT/stdout) = '' ]]
grepQuiet "Ignoring setting 'accept-flake-config' because experimental feature 'flakes' is not enabled" $TEST_ROOT/stderr
grepQuiet "error: could not find setting 'accept-flake-config'" $TEST_ROOT/stderr
# 'flakes' experimental-feature is disabled after, ignore and warn
NIX_CONFIG='
accept-flake-config = true
experimental-features = nix-command
' nix config show accept-flake-config 1>$TEST_ROOT/stdout 2>$TEST_ROOT/stderr
grepQuiet "false" $TEST_ROOT/stdout
' expect 1 nix config show accept-flake-config 1>$TEST_ROOT/stdout 2>$TEST_ROOT/stderr
[[ $(cat $TEST_ROOT/stdout) = '' ]]
grepQuiet "Ignoring setting 'accept-flake-config' because experimental feature 'flakes' is not enabled" $TEST_ROOT/stderr
grepQuiet "error: could not find setting 'accept-flake-config'" $TEST_ROOT/stderr
# 'flakes' experimental-feature is enabled before, process
NIX_CONFIG='