See for relevant changes: * https://www.seamonkey-project.org/releases/seamonkey2.53.4/ * https://www.seamonkey-project.org/releases/seamonkey2.53.3/ * https://www.seamonkey-project.org/releases/seamonkey2.53.2/ * https://www.seamonkey-project.org/releases/seamonkey2.53.1/ "SeaMonkey 2.53.4 uses the same backend as Firefox and contains the relevant Firefox 60.6 security fixes. Additional important security fixes up to Current Firefox 78.1 ESR and a few enhancements have been backported." Adds dependency on rust/llvm for stylo build. use ld.bfd on i386, otherwise lld OOM's when trying to link libxul - thanks sthen@ for the USE_LLD=No hint!