compilation.md

@@ -71,10 +71,13 @@ but the one provided should be up-to-date
 
 #### Installation ####
 
-Our policy is to not mess with default system paths. So instead we advise to either using *virtual environment* to install or to use an environment variable to add to python the path
-to our build directory. In general adding the following lines to your *.bashrc* (Linux)
-or *.profile* (MacOS) file does the trick. Of course you have to replace *mysourcepath*
-by the path to your own `lmgc90_user_xxx` directory (something like `/users/name/LMGC90/lmgc90_user_xxx/` and replacing `xxx` by the version you downloaded).
+If a *virtual environment* is used, then the `make install` command has already taken car of this step. It is directly possible to check on the [first steps](./first step) section.
+
+In any other case, our policy is to not mess with default system paths. So our recommendation is
+to use an environment variable to add to python the path to our build directory.
+In general adding the following lines to your *.bashrc* (Linux) or *.zshrc* (MacOS) file
+does the trick. Of course you have to replace *mysourcepath* by the path to your own `lmgc90_user_xxx` directory (something like `/users/name/LMGC90/lmgc90_user_xxx/`
+and replacing `xxx` by the version you downloaded).
 ```shell
 if [ -z ${PYTHONPATH} ]; then
   export PYTHONPATH=mysourcepath/build