--- a/pri/libgit2detect.pri
+++ b/pri/libgit2detect.pri
@@ -28,30 +28,51 @@
 }
 
 
 win32 {
-	if ($$LIBGIT_STATIC) {
-		LIBGIT2INCLUDE = "$$_PRO_FILE_PWD_/../libgit2/include"
+	# If LIBGIT2_PATH is passed on the qmake command line (e.g. from vcpkg),
+	# use its standard include/ and lib/ layout. Otherwise fall back to the
+	# legacy ../libgit2 sibling-directory layout.
+	!isEmpty(LIBGIT2_PATH) {
+		LIBGIT2INCLUDE = "$$LIBGIT2_PATH/include"
+		LIBGIT2LIB     = "$$LIBGIT2_PATH/lib"
 
 		exists($$LIBGIT2INCLUDE/git2.h) {
-			message("found libgit2 include path at $$LIBGIT2INCLUDE")
-		} else {
-			message("Fritzing requires libgit2")
-			message("Build it from the repo at https://github.com/libgit2")
-			message("See https://github.com/fritzing/fritzing-app/wiki for details.")
-
-			error("libgit2 include path not found in $$LIBGIT2INCLUDE")
-		}
-	}
-
-    contains(QMAKE_TARGET.arch, x86_64) {
-        LIBGIT2LIB = "$$_PRO_FILE_PWD_/../libgit2/build64/Release"
-    } else {
-        LIBGIT2LIB = "$$_PRO_FILE_PWD_/../libgit2/build32/Release"
-    }
-
-    exists($$LIBGIT2LIB/git2.lib) {
-        message("found libgit2 library in $$LIBGIT2LIB")
-    } else {
-        error("libgit2 library not found in $$LIBGIT2LIB")
-    }
+			message("found libgit2 include path at $$LIBGIT2INCLUDE (from LIBGIT2_PATH)")
+		} else {
+			error("libgit2 include path not found in $$LIBGIT2INCLUDE (LIBGIT2_PATH was set)")
+		}
+
+		exists($$LIBGIT2LIB/git2.lib) {
+			message("found libgit2 library in $$LIBGIT2LIB (from LIBGIT2_PATH)")
+		} else {
+			error("libgit2 library not found in $$LIBGIT2LIB (LIBGIT2_PATH was set)")
+		}
+	} else {
+		# Legacy layout: ../libgit2/include  +  ../libgit2/build{32,64}/Release
+		if ($$LIBGIT_STATIC) {
+			LIBGIT2INCLUDE = "$$_PRO_FILE_PWD_/../libgit2/include"
+
+			exists($$LIBGIT2INCLUDE/git2.h) {
+				message("found libgit2 include path at $$LIBGIT2INCLUDE")
+			} else {
+				message("Fritzing requires libgit2")
+				message("Build it from the repo at https://github.com/libgit2")
+				message("See https://github.com/fritzing/fritzing-app/wiki for details.")
+
+				error("libgit2 include path not found in $$LIBGIT2INCLUDE")
+			}
+		}
+
+		contains(QMAKE_TARGET.arch, x86_64) {
+			LIBGIT2LIB = "$$_PRO_FILE_PWD_/../libgit2/build64/Release"
+		} else {
+			LIBGIT2LIB = "$$_PRO_FILE_PWD_/../libgit2/build32/Release"
+		}
+
+		exists($$LIBGIT2LIB/git2.lib) {
+			message("found libgit2 library in $$LIBGIT2LIB")
+		} else {
+			error("libgit2 library not found in $$LIBGIT2LIB")
+		}
+	}
 
 	INCLUDEPATH += $$LIBGIT2INCLUDE
-    LIBS += -L$$LIBGIT2LIB -lgit2
+	LIBS += -L$$LIBGIT2LIB -lgit2
 }