fix: prevent for building dependencies twice (#99)

closes #94

Reviewed-on: #99
Co-authored-by: Maxim Slipenko <no-reply@maxim.slipenko.com>
Co-committed-by: Maxim Slipenko <no-reply@maxim.slipenko.com>

e2e-tests/issue_94_twice_build_test.go

@@ -0,0 +1,49 @@
+// ALR - Any Linux Repository
+// Copyright (C) 2025 The ALR Authors
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+//go:build e2e
+
+package e2etests_test
+
+import (
+	"bytes"
+	"strings"
+	"testing"
+
+	"github.com/efficientgo/e2e"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestE2EIssue94TwiceBuild(t *testing.T) {
+	dockerMultipleRun(
+		t,
+		"issue-94-twice-build",
+		COMMON_SYSTEMS,
+		func(t *testing.T, r e2e.Runnable) {
+			defaultPrepare(t, r)
+
+			var stderr bytes.Buffer
+			err := r.Exec(
+				e2e.NewCommand("sudo", "alr", "in", "test-94-app"),
+				e2e.WithExecOptionStderr(&stderr),
+			)
+			assert.NoError(t, err, "command failed")
+
+			output := stderr.String()
+			assert.Equal(t, 1, strings.Count(output, "Building package name=test-94-dep"))
+		},
+	)
+}