feat: add build tag to enable or disable pacman cron checker

Makefile

@@ -4,6 +4,10 @@ BINARY_NAME = f
 build:
 	CGO_ENABLED=0 go build -v -o $(BINARY_NAME) .
 
+.PHONY: build-updates
+build-updates:
+	CGO_ENABLED=0 go build -v -tags arch_updates -o $(BINARY_NAME) .
+
 # (build but with a smaller binary)
 .PHONY: dist
 dist:

fetch/pkg_pacman.go

@@ -0,0 +1,29 @@
+//go:build !arch_updates
+
+package fetch
+
+import (
+	"os"
+)
+
+const (
+	installedPkgsPath = "/var/lib/pacman/local/"
+)
+
+type PkgInfo struct {
+	Installed        int
+	AvailableUpdates int
+}
+
+func Pkgs() (*PkgInfo, error) {
+	installed, err := listPkgsPacman()
+	if err != nil {
+		return nil, err
+	}
+	return &PkgInfo{installed, 0}, nil
+}
+
+func listPkgsPacman() (int, error) {
+	files, err := os.ReadDir(installedPkgsPath)
+	return len(files), err
+}

fetch/pkg_pacman_updates.go

@@ -1,3 +1,5 @@
+//go:build arch_updates
+
 package fetch
 
 import (
@@ -9,7 +11,7 @@ import (
 
 const (
 	installedPkgsPath    = "/var/lib/pacman/local/"
-	availableUpdatesPath = "/.cache/cupdates"
+	availableUpdatesPath = "/.cache/available_updates"
 )
 
 type PkgInfo struct {