Getting error loading postcss plugin when running hugo with --source

support
1

Seems like postcss is trying to load the plugins from the directory that i am running hugo, so i cannot run hugo from a different directory with the --source flag. Tried with version 0.75 and latest. Also I am using the docsy theme GitHub - google/docsy: A set of Hugo doc templates for launching open source content.

hugo -s site
Start building sites … 
hugo v0.87.0-B0C541E4+extended linux/amd64 BuildDate=2021-08-03T10:57:28Z VendorInfo=gohugoio
Error: Error building site: POSTCSS: failed to transform "scss/main.css" (text/css): Error: Loading PostCSS Plugin failed: Cannot find module 'autoprefixer'
Require stack:
- /root/.docs/noop.js

(@/root/.docs/site/postcss.config.js)
    at load (/root/.docs/site/node_modules/postcss-load-config/src/plugins.js:28:11)
    at /root/.docs/site/node_modules/postcss-load-config/src/plugins.js:53:16
    at Array.map (<anonymous>)
    at plugins (/root/.docs/site/node_modules/postcss-load-config/src/plugins.js:52:8)
    at processResult (/root/.docs/site/node_modules/postcss-load-config/src/index.js:37:14)
    at /root/.docs/site/node_modules/postcss-load-config/src/index.js:151:14
    at async Promise.all (index 0)
2

Yes, this is a known current limitation/bug. There is an open GitHub issue about this, which I’m not totally sure how to fix.

To cut a long story short, in your case you need to cd into the project folder and run hugo without the source flag.

3

It somehow works on my computer (mac), and just seeing the issue on a linux build container. But not sure why