refactor: don't use readlink

.github/workflows/test.yml

@@ -34,10 +34,6 @@ jobs:
         if: runner.os == 'macOS'
         run: |
           brew install zsh
-      - name: Install coreutils on macOS
-        if: runner.os == 'macOS'
-        run: |
-          brew install coreutils
       - name: Install tox
         run: |
           python -m pip install tox

src/luamb/_shell.py

@@ -10,7 +10,6 @@
 
 # Dependencies
 #
-#   readlink (or greadlink)
 #   cat
 #   uname
 #   sed
@@ -28,9 +27,6 @@
 #       expanded/calculated version of LUAMB_ENVS_DIR.
 #       Set in _entrypoint.py.
 #
-#   __luamb_readlink
-#       A name of the readlink binary ('readlink' or 'greadlink').
-#
 #   __luamb_orig_ps1
 #       The original value of the PS1 variable.
 #       Unset if no active environment.
@@ -80,7 +76,7 @@
     local env_name=$1
     __luamb_check_env_name "$env_name" || return 1
     local env_path
-    env_path=$($__luamb_readlink -e "$__luamb_envs_dir/$env_name")
+    env_path=$__luamb_envs_dir/$env_name
     if [ ! -d "$env_path" ]; then
         echo "environment doesn't exist: $env_name"
         return 1
@@ -146,17 +142,6 @@
 }
 
 
-if [ "$(uname)" = "Darwin" ]; then
-    __luamb_readlink="greadlink"
-    if ! __luamb_check_exists $__luamb_readlink; then
-        echo "luamb: greadlink not found, install coreutils:"
-        echo "brew install coreutils"
-        return 1
-    fi
-else
-    __luamb_readlink="readlink"
-fi
-
 export LUAMB_ACTIVE_ENV=""
 
 if [ "$LUAMB_DISABLE_COMPLETION" != "true" ]; then