When comparing Input Mono vs Hasklig, the Slant community recommends Hasklig for most people. In the question“What are the best programming fonts?” Hasklig is ranked 30th while Input Mono is ranked 32nd.
Ranked in these QuestionsQuestion Ranking
Many letter-forms are available in Input Mono, the width and line-height of which are changeable. There are also non-monospaced sans and sans-serif forms available.
Pro Great on small-sized, high-resolution screens
Input Mono is designed to look good on HiDPI and low-resolution screens of variable zoom levels.
Pro Free for private use
Pro Large punctuation
The punctuation symbols are larger than in other traditional fonts, making for greater visibility.
Pro Non-monospaced sibling fonts
In addition to the monospaced variant, the Input family of fonts includes serif and non-serif proportional font families.
Pro Has a heavier appearance than Fira Code or Monoid.
Pro Great for Haskell
Pro Has many variants such as Italic, Bold Italic, Light, Semibold, etc., etc.
Pro Completely free and open source
Freely available via GitHub, therefore can be modified and improved by anyone
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 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.