bug#27858: Conda (on guix) does not activate environments

[Maxim Cournoyer <maxim.cournoyer@gmail.com>]

Hello,

Frederick Muriithi <fredmanglis@gmail.com> writes:

> 1) Install conda into a profile:
>
>     guix package --install=conda --profile=$HOME/guix_profiles/conda
>
> 2) Activate the profile:
>
>     source $HOME/guix_profiles/conda/etc/profile
>
> 3) Create an environment with conda and install biopython
>
>     conda create --name test-env biopython
>
> 4) Try to activate the environment (here's where it fails)
>
>     source activate test-env

I had never used conda before, so I was a bit surprised that it sneeked
that into my ~/.bashrc:

diff --git a/bash/.bashrc b/bash/.bashrc
index d0635bc..169b2c8 100644
--- a/bash/.bashrc
+++ b/bash/.bashrc
@@ -119,3 +119,19 @@ function up()
     cd "$dir"
     echo "info: now in $PWD [Git repo]"
 }
+
+# >>> conda initialize >>>
+# !! Contents within this block are managed by 'conda init' !!
+__conda_setup="$('/gnu/store/pjkxdaryj97yffhjxql2q4wpzs70hpa3-conda-4.8.3/bin/conda' 'shell.bash' 'hook' 2> /dev/null)"
+if [ $? -eq 0 ]; then
+    eval "$__conda_setup"
+else
+    if [ -f "/gnu/store/pjkxdaryj97yffhjxql2q4wpzs70hpa3-conda-4.8.3/etc/profile.d/conda.sh" ]; then
+        . "/gnu/store/pjkxdaryj97yffhjxql2q4wpzs70hpa3-conda-4.8.3/etc/profile.d/conda.sh"
+    else
+        export PATH="/gnu/store/pjkxdaryj97yffhjxql2q4wpzs70hpa3-conda-4.8.3/bin:$PATH"
+    fi
+fi
+unset __conda_setup
+# <<< conda initialize <<<
+

and required the presence of the 'sudo' command to be happy.

With that said,

$ guix environment --pure --ad-hoc conda bash coreutils sudo

(base) $ conda create --name test-env biopython

Then the suggested:

(base) $ conda activate test-env

(test-env) $

So, it seems to work.

Closing.

Maxim