fix: Replace $0 with more robust shell checker

dot_hooks.tmpl

@@ -1,6 +1,6 @@
 # >>> conda initialize >>>
 # !! Contents within this block are managed by 'conda init' !!
-__conda_setup="$($HOME/miniconda3/bin/conda shell.$(basename $0) 'hook' 2> /dev/null)"
+__conda_setup="$($HOME/miniconda3/bin/conda shell.$(basename $(readlink -f /proc/$$/exe)) 'hook' 2> /dev/null)"
 if [ $? -eq 0 ]; then
     eval "$__conda_setup"
 else
@@ -18,7 +18,7 @@ fi
 # <<< conda initialize <<<
 
 {{- if lookPath "direnv" }}
-eval "$(direnv hook $(basename $0))"
+eval "$(direnv hook $(basename $(readlink -f /proc/$$/exe)))"
 {{- end }}
 
 if [ -f $HOME/.ion/bin/ion ]; then
@@ -27,8 +27,8 @@ if [ -f $HOME/.ion/bin/ion ]; then
 fi
 
 # Import GNU parallel
-if [ $(command -v env_parallel.$(basename $0)) ]; then
-  source $(which env_parallel.$(basename $0))
+if [ $(command -v env_parallel.$(basename $(readlink -f /proc/$$/exe))) ]; then
+  source $(which env_parallel.$(basename $(readlink -f /proc/$$/exe)))
 fi
 
 {{- if eq .machinetype "workstation" }}