fix: support systems without lsb_release

README.md

@@ -8,7 +8,7 @@ Central feature is the modular directory structure
 that can handle everything from native package managers 
 over installation from source
 to copying or executing scripts from a URL.
-Similar as in [tldr](https://github.com/tldr-pages/tldr),
+Similar to [tldr](https://github.com/tldr-pages/tldr),
 creating alternative frontends is easy and appreciated.
 
 Instalee can install the same set of packages on any system
@@ -193,3 +193,11 @@ but the details still need to be fleshed out.
   + underscore extension might be superfluous through that, since `ext` was somewhat a proxy for a proper `provider` configuraion
 - Use system subdirectories for handlers and groups,
   which are used by default when system is detected
+
+## Notable Projects
+
+- another universal package manager,
+  but without affecting the system:
+  https://github.com/teaxyz/cli
+- universal package updater:
+  https://github.com/topgrade-rs/topgrade

instalee

@@ -148,7 +148,7 @@ runinstalee() {
 }
 
 if ! test -f "$handlers"
-then copy="$(find "$dir_home" -name "handlers.available.*" -exec sh -c "echo {} | rev | cut -d'.' -f1 | rev | xargs -i% expr $(lsb_release -s -i | tr 'A-Z' 'a-z') : % >/dev/null" \; -a -print)" &&
+then copy="$(find "$dir_home" -name "handlers.available.*" -exec sh -c "echo {} | rev | cut -d'.' -f1 | rev | xargs -i% expr $(lsb_release -s -i | tr 'A-Z' 'a-z' || cat /etc/os-release | grep '^ID=' | cut -d= -f2) : % >/dev/null" \; -a -print)" &&
 		test -n "$copy" &&
 		echo "Bootstrapping available handlers from $copy" &&
 		cp "$copy" "$handlers" || {