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Diffstat (limited to 'src/libexpr/eval-settings.hh')
| -rw-r--r-- | src/libexpr/eval-settings.hh | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/src/libexpr/eval-settings.hh b/src/libexpr/eval-settings.hh index 19122bc31..049f42e70 100644 --- a/src/libexpr/eval-settings.hh +++ b/src/libexpr/eval-settings.hh @@ -25,6 +25,26 @@ struct EvalSettings : Config [`builtins.nixPath`](@docroot@/language/builtin-constants.md#builtins-nixPath). )"}; + Setting<std::string> currentSystem{ + this, "", "eval-system", + R"( + This option defines + [`builtins.currentSystem`](@docroot@/language/builtin-constants.md#builtins-currentSystem) + in the Nix language if it is set as a non-empty string. + Otherwise, if it is defined as the empty string (the default), the value of the + [`system` ](#conf-system) + configuration setting is used instead. + + Unlike `system`, this setting does not change what kind of derivations can be built locally. + This is useful for evaluating Nix code on one system to produce derivations to be built on another type of system. + )"}; + + /** + * Implements the `eval-system` vs `system` defaulting logic + * described for `eval-system`. + */ + const std::string & getCurrentSystem(); + Setting<bool> restrictEval{ this, false, "restrict-eval", R"( |