When comparing JetBrains Mono vs Hasklig, the Slant community recommends JetBrains Mono for most people. In the question“What are the best programming fonts?” JetBrains Mono is ranked 16th while Hasklig is ranked 28th.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Easy to use to read
Pro Easy to differentiate l, I, and 1
Pro Broad variety for ligature glyphs
Pro Very beautiful
Pro Four different weights
Pro Simple forms
Free from unnecessary details.
Pro Shape of ovals approaches rectangle
Makes vertical reading easier.
Pro Saves a lot of screen space
Pro The dotted zero looks cool
Pro Great for Haskell
Pro Has a heavier appearance than Fira Code or Monoid
Pro Completely free and open source
Freely available via GitHub, therefore can be modified and improved by anyone.
Pro Has many variants such as Italic, Bold Italic, Light, Semibold, etc., etc
Cons
Con No Slashed version/option for 0 (zero)
Con Lacks !=
Some coding fonts with ligatures, like Fira Code, turn != into ≠, but Hasklig does not. The reason for this is that Hasklig was designed for Haskell code, and so turns /= into ≠ instead.
Con Some Ligatures like -<< don't look that good.
Con Has a heavier appearance than Fira Code or Monoid
Con No support for many editors, including emacs
Unfortunately, not supporting emacs is the number one reason I don't use this font all the time.
Con Very cute but not WYSIWYG
You want to see exactly what you've typed, not have your brain have to do a little dance every time you see one of these artifacts.