Benno Evers skribis: > assume I have installed some package > > /gnu/store/xxx-daemon-1.0 > > After a while I notice that it's inexplicably hanging, so I do 'guix > package -i daemon-1.0:debug', attach to the daemon with gdb, and...no > debug symbols can be loaded! Turns out, in the meantime the hash has > changed so i installed > > /gnu/store/yyy-daemon-1.0:debug One thing that could be done, maybe, is for ‘guix package -i’ to try to infer the right item to install. That is, when running “guix package -i foo:bar”: 1. If no ‘foo’ is present in the profile, install the latest ‘foo:bar’, as is already the case. 2. If another output of ‘foo’ is already installed, do: 2a. Retrieve the .drv for that item using ‘query-path-info’. i. If the .drv is present, parse it, and use the outputs specified therein–i.e., the one that match. ii. If the .drv is missing, well, install the latest ‘foo:bar’. The obvious problem is that this all sounds a bit complex, and it’s unclear whether case (i) would sufficiently frequent to justify this complexity. Thoughts? Thanks, Ludo’.