the documentation of `nix_setting_get` requires calling `nix_libutil_init`, which achieves nothing

[prednaz]

Problem

the documentation of nix_setting_get currently contains "This function requires nix_libutil_init() to be called". but it is nix_libstore_init that calls loadConfFile and populates the globalConfig, which nix_setting_get reads from. nix_libutil_init only improves error messages in a certain case and calls sodium_init.

Proposal

either

1. calling loadConfFile should move into initLibUtil or
2. the documentation of the documentation of nix_setting_get should require calling nix_libstore_init and nix_setting_get and nix_setting_set then should probably move into libstore.

Checklist

• checked latest Nix manual (source)
• checked open documentation issues and pull requests for possible duplicates

Priorities

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[prednaz]

can we get a "c api" label?