[gatsby-plugin-sharp] npm install is broken by imagemin-pngquant dependency

[shaunbent]

Description

This issue is pretty well documented down the chain but pngquant-bin a dependency of imagemin-pngquant is currently breaking the npm install process. It seems to be mainly effecting Linux systems aka common build environments. As a result, in my case I am not able to build and deploy my site.

imagemin/imagemin-pngquant#46
imagemin/pngquant-bin#78

I wonder if we could downgrade the version of imagemin-pngquant required by gatsby-plugin-sharp to 5.0.1 so avoid the broken version.

Environment

• Gatsby version (npm list gatsby): [email protected]
• gatsby-cli version (gatsby --version): 1.9.194
• Node.js version: 9.8.0
• Operating System: MacOS 10.13.4

[KyleAMathews]

Yeah, that seems like a reasonable fix. Is there any big differences between pngquant-bin v3 and v4?

[shaunbent]

Looks like v4 introduces a dependancy on Node V4 as well as this commit which is the one that seems to be causing everyone problems: imagemin/pngquant-bin#75

[shaunbent]

#4915