Something like this should work: 1. `sudo apt install build-essential` (install basic development tools) 2. `sudo apt build-dep geany` (should install all dependencies needed for building Geany). Before running this, you'll have to add the repository for "source" versions of packages - I think this is accessible from some update manager, I don't remember where exactly in mint this is. 3. `git clone https://github.com/geany/geany.git%60 (gets the Geany repo) 4. `cd geany` 5. `./autogen.sh --disable-html-docs && make -j 9 && sudo make install` (build and install Geany)