fix: include WSL support

Signed-off-by: Valentin Lab <valentin.lab@kalysto.org>

bin/compose

@@ -217,7 +217,15 @@ get_os() {
     local uname_output
     uname_output="$(uname -s)"
     case "${uname_output}" in
-        Linux*)   e linux;;
+        Linux*)
+            if [[ "$(< /proc/version)" == *@(Microsoft|WSL)* ]]; then
+                e wsl
+            # elif [[ "$(< /proc/version)" == *"@(microsoft|WSL)"* ]]; then
+            #     e wsl2
+            else
+                e linux
+            fi
+            ;;
         Darwin*)  e mac;;
         CYGWIN*)  e cygwin;;
         MINGW*)   e mingw;;
@@ -648,6 +656,10 @@ pretty_print() {
 }
 
 
+win_env() { "$CMD" /c "<nul set /p=%${1}%" 2>/dev/null; }
+wsl_path_env() { wslpath "$(win_env "${1}")"; }
+
+
 set_os() {
     OS="$(get_os)"
     case "$OS" in
@@ -680,6 +692,41 @@ set_os() {
             TZ_PATH=${TZ_PATH:-"$COMPOSE_LOCAL_ROOT"/timezones}
             COMPOSE_LAUNCHER_CACHE=${COMPOSE_LAUNCHER_CACHE:-"$COMPOSE_LOCAL_ROOT"/cache}
             ;;
+        wsl)
+            type -p cmd.exe >/dev/null || {
+                die "cmd.exe is not found in \$PATH."
+            }
+
+            CMD=$(type -p cmd.exe >/dev/null) || {
+                for p in {/mnt,}/c/WINDOWS/SYSTEM32; do
+                    if [ -x "$p"/cmd.exe ]; then
+                        CMD="$p"/cmd.exe
+                    fi
+                done
+                if [ -z "$CMD" ]; then
+                    die "cmd.exe is not found in \$PATH." \
+                        "And could not find it in standard directories."
+                fi
+            }
+
+            WIN_HOME="$(wsl_path_env UserProfile)"
+            WIN_PROGRAM_FILES="$(wsl_path_env ProgramFiles)"
+
+            COMPOSE_LAUNCHER_APP_DIR="$WIN_PROGRAM_FILES/Compose"
+            COMPOSE_LOCAL_ROOT=${COMPOSE_LOCAL_ROOT:-"$WIN_HOME/AppData/Local/Compose/Launcher"}
+
+            COMPOSE_VAR=${COMPOSE_VAR:-"$WIN_HOME/AppData/Local/Compose/lib"}
+            COMPOSE_CACHE=${COMPOSE_CACHE:-"$WIN_HOME/AppData/Local/Compose/cache"}
+
+            DATASTORE=${DATASTORE:-"$WIN_HOME/AppData/Local/Compose/data"}
+            CONFIGSTORE=${CONFIGSTORE:-"$WIN_HOME/AppData/Local/Compose/config"}
+
+            mkdir -p "$COMPOSE_VAR" "$COMPOSE_CACHE" "$DATASTORE" "$CONFIGSTORE" || return 1
+            SESSION_DIR=${SESSION_DIR:-"$COMPOSE_LOCAL_ROOT"/sessions}
+            CHARM_STORE=${CHARM_STORE:-"$COMPOSE_LAUNCHER_APP_DIR/charm-store"}
+            TZ_PATH=${TZ_PATH:-"$COMPOSE_LOCAL_ROOT"/timezones}
+            COMPOSE_LAUNCHER_CACHE=${COMPOSE_LAUNCHER_CACHE:-"$COMPOSE_LOCAL_ROOT"/cache}
+            ;;
         *)
             echo "System '$os' not supported yet." >&2
             return 1