i-tu/hasklig

Hasklig is a monospaced font designed for writing code, built on top of Adobe's Source Code Pro typeface. Its distinguishing feature is ligatures: when you type a multi-character symbol like -> or >>=, the font displays it as a single connected glyph that looks closer to the mathematical notation it represents. The underlying characters in your file stay exactly the same, so copying and pasting code still works normally. Only the visual rendering changes. The project was created for Haskell programmers, because Haskell makes heavy use of symbolic operators like =>, -<, >>=, and =<< that can look cluttered when displayed as individual characters. Ligatures let these symbols render in a way that more closely matches how they appear in academic papers about functional programming. The font covers several dozen such symbols, from common ones like -> and :: to more specialized ones used in Haskell libraries. The repository contains source files for the font, not just the final font file. To get the actual font to install on your computer, you would either build it yourself or download a pre-built release. Building from source requires Adobe's Font Development Kit for OpenType (AFDKO) and the Python FontTools library. Shell scripts are included to automate building all font weights at once. The font ships in both OTF and TTF formats, covering regular and italic styles at multiple weights. Those weights are derived from two master extremes (extra-light and black), with intermediate weights calculated automatically during the build process. This is a niche tool aimed at developers who spend hours reading code and want their editor to render symbolic operators in a more visually comfortable way.