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lib/options: fix mkPackageOption docs

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nixdoc takes everything from Type: to Example: as the type, which
misrendered a large part of the docs. it also drops sorely needed spaces
where the type had line breaks, so all has to be on one line (or use
non-standard literal spaces, which is probably worse).

also clarify what the `?` for arguments mean while we're here.
This commit is contained in:
pennae 2023-03-04 22:52:02 +01:00 committed by pennae
parent a6c145df9e
commit f0e8db002b
1 changed files with 5 additions and 7 deletions
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12
lib/options.nix
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@ -110,10 +110,6 @@ rec {
/* Creates an Option attribute set for an option that specifies the
package a module should use for some purpose.
Type: mkPackageOption :: pkgs -> (string|[string]) ->
{ default? :: [string], example? :: null|string|[string], extraDescription? :: string } ->
option
The package is specified in the third argument under `default` as a list of strings
representing its attribute path in nixpkgs (or another package set).
Because of this, you need to pass nixpkgs itself (or a subset) as the first argument.
@ -133,6 +129,8 @@ rec {
If you wish to explicitly provide no default, pass `null` as `default`.
Type: mkPackageOption :: pkgs -> (string|[string]) -> { default? :: [string], example? :: null|string|[string], extraDescription? :: string } -> option
Example:
mkPackageOption pkgs "hello" { }
=> { _type = "option"; default = «derivation /nix/store/3r2vg51hlxj3cx5vscp0vkv60bqxkaq0-hello-2.10.drv»; defaultText = { ... }; description = "The hello package to use."; type = { ... }; }
@ -157,11 +155,11 @@ rec {
# Name for the package, shown in option description
name:
{
# The attribute path where the default package is located
# The attribute path where the default package is located (may be omitted)
default ? name,
# A string or an attribute path to use as an example
# A string or an attribute path to use as an example (may be omitted)
example ? null,
# Additional text to include in the option description
# Additional text to include in the option description (may be omitted)
extraDescription ? "",
}:
let