yarn install v1.3.2
(node:6320) [DEP0005] DeprecationWarning: Buffer() is deprecated due to security and usability issues. Please use the Buffer.alloc(), Buffer.allocUnsafe(), or Buffer.from() methods instead.
[1/5] Validating package.json...
[2/5] Resolving packages...
[3/5] Fetching packages...
info fsevents@1.1.3: The platform "linux" is incompatible with this module.
info "fsevents@1.1.3" is an optional dependency and failed compatibility check. Excluding it from installation.
error upath@1.0.4: The engine "node" is incompatible with this module. Expected version ">=4 <=9".
error Found incompatible module
Depends on upath@1.0.4, so build process fails: