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author | Eelco Dolstra <eelco.dolstra@logicblox.com> | 2015-07-30 13:36:57 +0200 |
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committer | Eelco Dolstra <eelco.dolstra@logicblox.com> | 2015-07-30 13:44:50 +0200 |
commit | f463d2490322a7a7e41634bbf23fc9cbdbdb9fae (patch) | |
tree | 3a7c53aeccc5d075999b34264db969d519815fcd /lib/options.nix | |
parent | d61e1b24e6d280ab596abca0da2b33293eaaeef6 (diff) | |
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Add read-only options
These are options that can have only one definition, regardless of priority.
Diffstat (limited to 'lib/options.nix')
-rw-r--r-- | lib/options.nix | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/options.nix b/lib/options.nix index 5c543f56bcf..444ec37e6ea 100644 --- a/lib/options.nix +++ b/lib/options.nix @@ -19,6 +19,7 @@ rec { , apply ? null # Function that converts the option value to something else. , internal ? null # Whether the option is for NixOS developers only. , visible ? null # Whether the option shows up in the manual. + , readOnly ? null # Whether the option can be set only once , options ? null # Obsolete, used by types.optionSet. } @ attrs: attrs // { _type = "option"; }; @@ -90,6 +91,7 @@ rec { declarations = filter (x: x != unknownModule) opt.declarations; internal = opt.internal or false; visible = opt.visible or true; + readOnly = opt.readOnly or false; type = opt.type.name or null; } // (if opt ? example then { example = scrubOptionValue opt.example; } else {}) |