• balsoft@lemmy.ml
    2·
    1 day ago

    But Nix uses a normal string when passing into TOML, so I do have to escape anyways

    What do you mean by that? You are always able to just use the '' strings instead of the " strings, they are just different syntax for the same underlying type. Or are you just using lib.generators.toINI without any arguments? Maybe try something like this:

    toTomlEscapeBackslashes = toINI {
  mkKeyValue = mkKeyValueDefault { mkValueString = x: lib.escape [ ''\'' ] (toString x); } "=";
}

    This will escape the values, like this:

    nix-repl> :print toTomlEscapeBackslashes { my.regex = ''foo\nbar''; }
[my]
regex=foo\\nbar
    • Ephera@lemmy.mlOPEnglish
      2·
      1 day ago

      I figured, I’d involuntarily sign up for counter suggestions by posting this. 😅

      Using lib.escape is a good idea, thanks.

      But yeah, basically I want to configure Alacritty and I’m using the respective home-manager module.
      Even more specifically, I want to pass stuff, including a regex, into the settings parameter, which more-or-less just takes the Nix expression that I shove in and then outputs it as TOML on disk.

      As for how I would’ve liked this to work:

      But the TOML is templated with "double-quotes", so I do need to escape the regex after all.

      I did just try to understand how the Alacritty module does the templating and found this gem:

      # TODO: why is this needed? Is there a better way to retain escape sequences?
"substituteInPlace $out --replace-quiet '\\\\' '\\'"

      Source

      So, that doesn’t fill me with a whole lot of confidence. 🙃

      But yeah, it’s working now without me having to write a whole bunch of backslashes, so that’s good enough in my book.