refactor: dedupe theme values and app helpers

apps/common.nu

@@ -15,3 +15,58 @@ export def print_error [msg: string] {
 export def print_warning [msg: string] {
     print $"(ansi yellow)[WARN](ansi reset) ($msg)"
 }
+
+export def get-hostname [] {
+	if $nu.os-info.name == "macos" {
+		try { ^scutil --get LocalHostName | str trim } catch { ^hostname -s | str trim }
+	} else {
+		^hostname | str trim
+	}
+}
+
+export def resolve-host [hostname?: string] {
+	if ($hostname | is-empty) {
+		get-hostname
+	} else {
+		$hostname
+	}
+}
+
+export def cleanup-result-link [] {
+	if ("./result" | path exists) {
+		rm ./result
+	}
+}
+
+export def build-config [kind: string, hostname?: string, ...rest: string] {
+	let host = resolve-host $hostname
+
+	print_info $"Building configuration for ($host)"
+
+	if $kind == "darwin" {
+		nix build $".#darwinConfigurations.($host).system" --show-trace ...$rest
+	} else {
+		nix build $".#nixosConfigurations.($host).config.system.build.toplevel" --show-trace ...$rest
+	}
+
+	cleanup-result-link
+	print_success "Build completed successfully"
+}
+
+export def update-flake [inputs: list<string>] {
+	if ($inputs | is-empty) {
+		print_info "Updating all flake inputs"
+		nix flake update
+	} else {
+		print_info $"Updating flake inputs: ($inputs | str join ', ')"
+		nix flake update ...$inputs
+	}
+
+	print_info "Regenerating flake.nix"
+	nix run .#write-flake
+
+	print_info "Formatting"
+	alejandra .
+
+	print_success "Flake updated"
+}