soupglasses / alexandra Goto Github PK

A function attributes should have spaces when inlined:

{pkgs, ...}: should become { pkgs, ... }:.

While preferably I'd like to stick as close as possible to Alejandra, one of my largest pet peeves with Alejandra is how newline happy it is for many function attributes longer than one...

So, I propose to allow having multiple arguments inline, given that the line-length does not get too long.

This however would require building up new logic inside Alejandra to do this measurement of such an "inline" block. If this is done, it would make it a much harder diversion from Alejandra as a project, and Alexandra would no longer be a simple "Alejandra, but with spaces!" project which was its primary goal.

Feedback is welcome.

Example:

For example given the input of:

{ arg1, arg2, arg3, ... }:

Alejandra would format it onto 4 separate lines:

{
  arg1,
  arg2,
  arg3,
  ...
}:

Consideration is to follow the precedent set by RFC 0166 for argument lists, which says notably the following:

As many arguments as possible must be fit onto the first line.
...
RFC 0166: Section for Function Application.

Which would allow the previous formatting to stay unchanged, as it is "small".