Step 0: Have a current working build environment for building Firefox for Android for a recent checkout of mozilla-central. Step 1: Figure out when the revision you are interested in was checked in. hg log -r <revision> will give you a date of the checkin. Step 2: Check the revision history of the Simple Firefox […]

Compiling Servo on Windows 10 I hit the following error ./mach build -r <time passes> — stderr thread ‘<main>’ panicked at ‘Can’t find python (tried python27.exe and python.exe)! Try fixing PATH or setting the PYTHON env var’, C:\msys64\home\kbrosnan\src\servo\components\style\build.rs:22 note: Run with `RUST_BACKTRACE=1` for a backtrace. Setting the python environment variable allowed the build to succeed. […]