> What is the output of "guix gc --referrers /gnu/store/xxxxx.drv" when
> applied to the .drv file for ghc-pandoc?

I've now removed ghc-pandoc by turning off --gc-keep-..., but from my first post,

- /gnu/store/qs5c2ibj15ym6lxf72vz7ds0h96k1vv5-ghc-pandoc-2.2.1.drv has 1
referrer, itself;

- /gnu/store/5gp70m5jwyi4ryl8i7pcj3c52g3pl4hb-ghc-pandoc-2.2.1.drv  has 0 referrer.

-- 
Pierre Neidhardt
https://ambrevar.xyz/