diff --git a/tests/pkg/.gitignore b/tests/pkg/.gitignore
index 484bdc670f..3c8b7dae07 100644
--- a/tests/pkg/.gitignore
+++ b/tests/pkg/.gitignore
@@ -1 +1,2 @@
 lake-manifest.json
+produced.out
diff --git a/tests/pkg/mod_clash/Test/ImportDiff.lean b/tests/pkg/mod_clash/Test/ImportDiff.lean
new file mode 100644
index 0000000000..722e3067ba
--- /dev/null
+++ b/tests/pkg/mod_clash/Test/ImportDiff.lean
@@ -0,0 +1,3 @@
+import Diff
+
+def testDiff := foo
diff --git a/tests/pkg/mod_clash/Test/ImportSame.lean b/tests/pkg/mod_clash/Test/ImportSame.lean
new file mode 100644
index 0000000000..4235520695
--- /dev/null
+++ b/tests/pkg/mod_clash/Test/ImportSame.lean
@@ -0,0 +1,3 @@
+import Same
+
+def testSame := same
diff --git a/tests/pkg/mod_clash/clean.sh b/tests/pkg/mod_clash/clean.sh
new file mode 100755
index 0000000000..f07293fd2a
--- /dev/null
+++ b/tests/pkg/mod_clash/clean.sh
@@ -0,0 +1,3 @@
+rm -rf .lake lake-manifest.json produced.out
+rm -rf depA/.lake depA/lake-manifest.json
+rm -rf depB/.lake depB/lake-manifest.json
diff --git a/tests/pkg/mod_clash/depA/Diff.lean b/tests/pkg/mod_clash/depA/Diff.lean
new file mode 100644
index 0000000000..6ade3028f7
--- /dev/null
+++ b/tests/pkg/mod_clash/depA/Diff.lean
@@ -0,0 +1 @@
+def foo := "depA"
diff --git a/tests/pkg/mod_clash/depA/Same.lean b/tests/pkg/mod_clash/depA/Same.lean
new file mode 100644
index 0000000000..949bb69ad2
--- /dev/null
+++ b/tests/pkg/mod_clash/depA/Same.lean
@@ -0,0 +1 @@
+def same := 0
diff --git a/tests/pkg/mod_clash/depA/lakefile.toml b/tests/pkg/mod_clash/depA/lakefile.toml
new file mode 100644
index 0000000000..197dc30c8f
--- /dev/null
+++ b/tests/pkg/mod_clash/depA/lakefile.toml
@@ -0,0 +1,7 @@
+name = "depA"
+
+[[lean_lib]]
+name = "Same"
+
+[[lean_lib]]
+name = "Diff"
diff --git a/tests/pkg/mod_clash/depB/Diff.lean b/tests/pkg/mod_clash/depB/Diff.lean
new file mode 100644
index 0000000000..4ddddea480
--- /dev/null
+++ b/tests/pkg/mod_clash/depB/Diff.lean
@@ -0,0 +1 @@
+def bar := "depB"
diff --git a/tests/pkg/mod_clash/depB/Same.lean b/tests/pkg/mod_clash/depB/Same.lean
new file mode 100644
index 0000000000..949bb69ad2
--- /dev/null
+++ b/tests/pkg/mod_clash/depB/Same.lean
@@ -0,0 +1 @@
+def same := 0
diff --git a/tests/pkg/mod_clash/depB/lakefile.toml b/tests/pkg/mod_clash/depB/lakefile.toml
new file mode 100644
index 0000000000..f73b9a27aa
--- /dev/null
+++ b/tests/pkg/mod_clash/depB/lakefile.toml
@@ -0,0 +1,7 @@
+name = "depB"
+
+[[lean_lib]]
+name = "Same"
+
+[[lean_lib]]
+name = "Diff"
diff --git a/tests/pkg/mod_clash/lakefile.toml b/tests/pkg/mod_clash/lakefile.toml
new file mode 100644
index 0000000000..ba506393d1
--- /dev/null
+++ b/tests/pkg/mod_clash/lakefile.toml
@@ -0,0 +1,12 @@
+name = "test"
+
+[[lean_lib]]
+name = "Test"
+
+[[require]]
+name = "depA"
+path = "depA"
+
+[[require]]
+name = "depB"
+path = "depB"
diff --git a/tests/pkg/mod_clash/test.sh b/tests/pkg/mod_clash/test.sh
new file mode 100755
index 0000000000..f451c838d0
--- /dev/null
+++ b/tests/pkg/mod_clash/test.sh
@@ -0,0 +1,13 @@
+#!/usr/bin/env bash
+source ../../lake/tests/common.sh
+
+# This test covers importing modules which are defined in multiple packages.
+
+./clean.sh
+test_run resolve-deps
+
+# Test that importing a module with multiple equivalent candidates works
+test_run build Test.ImportSame
+
+# Test that importing a module with multiple distinct candidates fails
+test_err 'Unknown identifier `foo`' build Test.ImportDiff