shell: fix log when no log rules

also fix nix devshell

flake.nix

@@ -40,12 +40,7 @@
 
     devShells = forAllSystems (pkgs: {
       default = pkgs.mkShellNoCC {
-        inputsFrom = [self.packages.${pkgs.system}.caelestia-cli];
-        packages = [
-          (pkgs.writeShellScriptBin "caelestia" ''
-            cd src && python -m caelestia "$@"
-          '')
-        ];
+        packages = [(self.packages.${pkgs.system}.caelestia-cli.override {withShell = true;})];
       };
     });
   };

src/caelestia/subcommands/shell.py

@@ -44,7 +44,10 @@ class Command:
         print(self.shell("ipc", "show"), end="")
 
     def print_log(self) -> None:
-        log = self.shell("log", "-r", self.args.log_rules)
+        if self.args.log_rules:
+            log = self.shell("log", "-r", self.args.log_rules)
+        else:
+            log = self.shell("log")
         # FIXME: remove when logging rules are added/warning is removed
         for line in log.splitlines():
             if self.filter_log(line):