diff --git a/arduino/libraries/loader.go b/arduino/libraries/loader.go
index 70e738d3fdd..0546229745a 100644
--- a/arduino/libraries/loader.go
+++ b/arduino/libraries/loader.go
@@ -67,7 +67,7 @@ func makeNewLibrary(libraryDir *paths.Path, location LibraryLocation) (*Library,
 
 	library := &Library{}
 	library.Location = location
-	library.InstallDir = libraryDir
+	library.InstallDir = libraryDir.Canonical()
 	if libraryDir.Join("src").Exist() {
 		library.Layout = RecursiveLayout
 		library.SourceDir = libraryDir.Join("src")
@@ -127,7 +127,7 @@ func makeNewLibrary(libraryDir *paths.Path, location LibraryLocation) (*Library,
 
 func makeLegacyLibrary(path *paths.Path, location LibraryLocation) (*Library, error) {
 	library := &Library{
-		InstallDir:    path,
+		InstallDir:    path.Canonical(),
 		Location:      location,
 		SourceDir:     path,
 		Layout:        FlatLayout,
diff --git a/go.mod b/go.mod
index d9e7e87844b..4af7602abc3 100644
--- a/go.mod
+++ b/go.mod
@@ -4,7 +4,7 @@ go 1.14
 
 require (
 	github.com/arduino/board-discovery v0.0.0-20180823133458-1ba29327fb0c
-	github.com/arduino/go-paths-helper v1.4.0
+	github.com/arduino/go-paths-helper v1.5.0
 	github.com/arduino/go-properties-orderedmap v1.3.0
 	github.com/arduino/go-timeutils v0.0.0-20171220113728-d1dd9e313b1b
 	github.com/arduino/go-win32-utils v0.0.0-20180330194947-ed041402e83b
diff --git a/go.sum b/go.sum
index 232f81baed5..fa688ad2e28 100644
--- a/go.sum
+++ b/go.sum
@@ -16,6 +16,8 @@ github.com/arduino/go-paths-helper v1.0.1/go.mod h1:HpxtKph+g238EJHq4geEPv9p+gl3
 github.com/arduino/go-paths-helper v1.2.0/go.mod h1:HpxtKph+g238EJHq4geEPv9p+gl3v5YYu35Yb+w31Ck=
 github.com/arduino/go-paths-helper v1.4.0 h1:ilnseAdxmN1bFnLxxXHRtcdmt9jBf3O4jtYfWfqule4=
 github.com/arduino/go-paths-helper v1.4.0/go.mod h1:V82BWgAAp4IbmlybxQdk9Bpkz8M4Qyx+RAFKaG9NuvU=
+github.com/arduino/go-paths-helper v1.5.0 h1:RVo189hD+GhUS1rQ3gixwK1nSbvVR8MGIGa7Gxv2bdM=
+github.com/arduino/go-paths-helper v1.5.0/go.mod h1:V82BWgAAp4IbmlybxQdk9Bpkz8M4Qyx+RAFKaG9NuvU=
 github.com/arduino/go-properties-orderedmap v1.3.0 h1:4No/vQopB36e7WUIk6H6TxiSEJPiMrVOCZylYmua39o=
 github.com/arduino/go-properties-orderedmap v1.3.0/go.mod h1:DKjD2VXY/NZmlingh4lSFMEYCVubfeArCsGPGDwb2yk=
 github.com/arduino/go-timeutils v0.0.0-20171220113728-d1dd9e313b1b h1:9hDi4F2st6dbLC3y4i02zFT5quS4X6iioWifGlVwfy4=
diff --git a/test/conftest.py b/test/conftest.py
index e7e2b231490..2688ef7bdf8 100644
--- a/test/conftest.py
+++ b/test/conftest.py
@@ -55,13 +55,13 @@ def data_dir(tmpdir_factory):
     # due to the above on Windows we cut the tmp path straight to /tmp/xxxxxxxx
     if platform.system() == "Windows":
         with tempfile.TemporaryDirectory() as tmp:
-            yield tmp
+            yield os.path.realpath(tmp)
             # We don't need to remove the directory since
             # tempfile.TemporaryDirectory deletes itself
             # automatically when exits its scope.
     else:
         data = tmpdir_factory.mktemp("ArduinoTest")
-        yield str(data)
+        yield os.path.realpath(data)
         shutil.rmtree(data, ignore_errors=True)
 
 
@@ -82,7 +82,7 @@ def downloads_dir(tmpdir_factory, worker_id):
             if not lock.is_file():
                 lock.touch()
 
-    yield str(download_dir)
+    yield os.path.realpath(download_dir)
     shutil.rmtree(download_dir, ignore_errors=True)
 
 
@@ -94,7 +94,7 @@ def working_dir(tmpdir_factory):
     at the end, this way all the tests work in isolation.
     """
     work_dir = tmpdir_factory.mktemp("ArduinoTestWork")
-    yield str(work_dir)
+    yield os.path.realpath(work_dir)
     shutil.rmtree(work_dir, ignore_errors=True)
 
 
diff --git a/test/test_compile.py b/test/test_compile.py
index 381f2ec18ed..67da7a579b5 100644
--- a/test/test_compile.py
+++ b/test/test_compile.py
@@ -581,7 +581,7 @@ def test_compile_with_archives_and_long_paths(run_command):
     assert run_command("update")
 
     # Install core to compile
-    assert run_command("core install esp8266:esp8266")
+    assert run_command("core install esp8266:esp8266@2.7.4")
 
     # Install test library
     assert run_command("lib install ArduinoIoTCloud")