feat(install): Only show binary installable versions with `--list --n…

…o-build`

libexec/swiftenv-install

@@ -204,13 +204,33 @@ find_binary_url_from_api() {
   fi
 }
 
+sort_versions() {
+  sed 'h; s/[+-]/./g; s/.p\([[:digit:]]\)/.z\1/; s/$/.z/; G; s/\n/ /' | \
+    LC_ALL=C sort -t. -k 1,1 -k 2,2n -k 3,3n -k 4,4n -k 5,5n | awk '{print $2}'
+}
+
 get_version_list() {
   if $snapshots; then
     curl -H 'Accept: text/plain' "https://swiftenv-api.fuller.li/versions?snapshot=true&platform=$(get_platform)"
     exit
   fi
 
-  swiftenv-build --definitions
+  if ([ "$build" == "false" ]); then
+    VERSIONS="$(ls "$SWIFTENV_SOURCE_PATH/share/swiftenv-install" | grep -v json | sort_versions | uniq)"
+    PLATFORM="$(get_platform)"
+
+    for version in $VERSIONS; do
+      URL=""
+      source "$SWIFTENV_SOURCE_PATH/share/swiftenv-install/$version"
+
+      if [ -n "$URL" ]; then
+        echo $version
+      fi
+    done
+  else
+    swiftenv-build --definitions
+  fi
+
   exit
 }