HAC - HAC Ada Compiler======================HAC is perhaps the first open-source (albeit verypartial) Ada compiler fully programmed in Ada itself.====More complete description in the file:  doc/hac.txt====If you are impatient: in Alire (https://alire.ada.dev/),do "alr get hac", then "alr run" from the hac* directory.Alternatively: have GNAT installed (https://www.adacore.com/download),then, on your preferred command-line interpreter:  gnatmake -P hac  cd exm  ../hac gallery.adb(if `gnatmake` doesn't work, try `gprbuild`; for Windows, '\' is meant in place of '/')Or, if you don't want to touch the command-line at all for playingwith HAC, you can use LEA (http://l-e-a.sf.net/).Enjoy!