bc192a95ef
They are put in the manual separate pages under the new overarching description of experimental features. The settings page just lists the valid experimental feature names (so people know what a valid setting entry looks like), with links to those pages. It doesn't attempt to describe each experimental feature as that is too much information for the configuration settings section.
87 lines
2.8 KiB
Nix
87 lines
2.8 KiB
Nix
with builtins;
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rec {
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splitLines = s: filter (x: !isList x) (split "\n" s);
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concatStrings = concatStringsSep "";
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attrsToList = a:
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map (name: { inherit name; value = a.${name}; }) (builtins.attrNames a);
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replaceStringsRec = from: to: string:
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# recursively replace occurrences of `from` with `to` within `string`
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# example:
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# replaceStringRec "--" "-" "hello-----world"
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# => "hello-world"
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let
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replaced = replaceStrings [ from ] [ to ] string;
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in
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if replaced == string then string else replaceStringsRec from to replaced;
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squash = replaceStringsRec "\n\n\n" "\n\n";
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trim = string:
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# trim trailing spaces and squash non-leading spaces
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let
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trimLine = line:
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let
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# separate leading spaces from the rest
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parts = split "(^ *)" line;
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spaces = head (elemAt parts 1);
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rest = elemAt parts 2;
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# drop trailing spaces
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body = head (split " *$" rest);
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in spaces + replaceStringsRec " " " " body;
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in concatStringsSep "\n" (map trimLine (splitLines string));
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# FIXME: O(n^2)
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unique = foldl' (acc: e: if elem e acc then acc else acc ++ [ e ]) [];
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nameValuePair = name: value: { inherit name value; };
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filterAttrs = pred: set:
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listToAttrs (concatMap (name: let v = set.${name}; in if pred name v then [(nameValuePair name v)] else []) (attrNames set));
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showSetting = { useAnchors }: name: { description, documentDefault, defaultValue, aliases, value }:
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let
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result = squash ''
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- ${if useAnchors
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then ''<span id="conf-${name}">[`${name}`](#conf-${name})</span>''
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else ''`${name}`''}
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${indent " " body}
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'';
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# separate body to cleanly handle indentation
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body = ''
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${description}
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**Default:** ${showDefault documentDefault defaultValue}
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${showAliases aliases}
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'';
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showDefault = documentDefault: defaultValue:
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if documentDefault then
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# a StringMap value type is specified as a string, but
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# this shows the value type. The empty stringmap is `null` in
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# JSON, but that converts to `{ }` here.
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if defaultValue == "" || defaultValue == [] || isAttrs defaultValue
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then "*empty*"
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else if isBool defaultValue then
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if defaultValue then "`true`" else "`false`"
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else "`${toString defaultValue}`"
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else "*machine-specific*";
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showAliases = aliases:
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if aliases == [] then "" else
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"**Deprecated alias:** ${(concatStringsSep ", " (map (s: "`${s}`") aliases))}";
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in result;
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indent = prefix: s:
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concatStringsSep "\n" (map (x: if x == "" then x else "${prefix}${x}") (splitLines s));
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showSettings = args: settingsInfo: concatStrings (attrValues (mapAttrs (showSetting args) settingsInfo));
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}
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