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lib/types: improve loaOf message even more

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Now we suggest correct names for all options in Nixpkgs and also home-manager at the time of writing.
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Jan Tojnar 2020-01-11 15:02:57 +01:00
parent 6fc46fbb17
commit 13633bd21a
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1 changed files with 64 additions and 7 deletions
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lib/types.nix
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@ -340,23 +340,80 @@ rec {
let
padWidth = stringLength (toString (length def.value));
unnamed = i: unnamedPrefix + fixedWidthNumber padWidth i;
nameAttrs = {
"environment.etc" = "target";
};
nameAttr = nameAttrs.${option} or "name";
anyString = placeholder "name";
nameAttrs = [
{ path = [ "environment" "etc" ];
name = "target";
}
{ path = [ "containers" anyString "bindMounts" ];
name = "mountPoint";
}
{ path = [ "programs" "ssh" "knownHosts" ];
# hostNames is actually a list so we would need to handle it only when singleton
name = "hostNames";
}
{ path = [ "fileSystems" ];
name = "mountPoint";
}
{ path = [ "boot" "specialFileSystems" ];
name = "mountPoint";
}
{ path = [ "services" "znapzend" "zetup" ];
name = "dataset";
}
{ path = [ "services" "znapzend" "zetup" anyString "destinations" ];
name = "label";
}
{ path = [ "services" "geoclue2" "appConfig" ];
name = "desktopID";
}
{ path = [ "home-manager" "users" anyString "programs" "ssh" "matchBlocks" ];
name = "host"; # https://github.com/rycee/home-manager/blob/e8dbc3561373b68d12decb3c0d7c1ba245f138f7/modules/programs/ssh.nix#L265
}
{ path = [ "home-manager" "users" anyString "home" "file" ];
name = "target"; # https://github.com/rycee/home-manager/blob/0e9b7aab3c6c27bf020402e0e2ef20b65c040552/modules/files.nix#L33
}
{ path = [ "home-manager" "users" anyString "xdg" "configFile" ];
name = "target"; # https://github.com/rycee/home-manager/blob/54de0e1d79a1370e57a8f23bef89f99f9b92ab67/modules/misc/xdg.nix#L41
}
{ path = [ "home-manager" "users" anyString "xdg" "dataFile" ];
name = "target"; # https://github.com/rycee/home-manager/blob/54de0e1d79a1370e57a8f23bef89f99f9b92ab67/modules/misc/xdg.nix#L58
}
];
matched = let
equals = a: b: b == anyString || a == b;
fallback = { name = "name"; };
in findFirst ({ path, ... }: all (v: v == true) (zipListsWith equals loc path)) fallback nameAttrs;
nameAttr = matched.name;
nameValueOld = value:
if isList value then
if length value > 0 then
"[ " + concatMapStringsSep " " escapeNixString value + " ]"
else
"[ ]"
else
escapeNixString value;
nameValueNew = value: unnamed:
if isList value then
if length value > 0 then
head value
else
unnamed
else
value;
res =
{ inherit (def) file;
value = listToAttrs (
imap1 (elemIdx: elem:
{ name = elem.${nameAttr} or (unnamed elemIdx);
{ name = nameValueNew (elem.${nameAttr} or (unnamed elemIdx)) (unnamed elemIdx);
value = elem;
}) def.value);
};
option = concatStringsSep "." loc;
sample = take 3 def.value;
more = lib.optionalString (length def.value > 3) "... ";
list = concatMapStrings (x: ''{ ${nameAttr} = "${x.${nameAttr} or "unnamed"}"; ...} '') sample;
set = concatMapStrings (x: ''${x.${nameAttr} or "unnamed"} = {...}; '') sample;
list = concatMapStrings (x: ''{ ${nameAttr} = ${nameValueOld (x.${nameAttr} or "unnamed")}; ...} '') sample;
set = concatMapStrings (x: ''${nameValueNew (x.${nameAttr} or "unnamed") "unnamed"} = {...}; '') sample;
msg = ''
In file ${def.file}
a list is being assigned to the option config.${option}.