diff --git a/.gitignore b/.gitignore
index 7562522..360a770 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,6 @@
+Cargo.lock
+target
+
 xi-modal-input/Cargo.lock
 xi-modal-input/target
 
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..802b197
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,7 @@
+[workspace]
+members = [
+    "xi-modal-input",
+    "xi-ffi",
+    "playground-utils",
+    "playground-utils-ffi",
+]
diff --git a/RustPlayground/RustPlayground.xcodeproj/project.pbxproj b/RustPlayground/RustPlayground.xcodeproj/project.pbxproj
index 44b6cce..9e3df5d 100644
--- a/RustPlayground/RustPlayground.xcodeproj/project.pbxproj
+++ b/RustPlayground/RustPlayground.xcodeproj/project.pbxproj
@@ -9,9 +9,9 @@
 /* Begin PBXBuildFile section */
 		60096082227F81E4001BE755 /* SharePreferencesViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = 60096081227F81E4001BE755 /* SharePreferencesViewController.swift */; };
 		60096085227FA93E001BE755 /* Github.swift in Sources */ = {isa = PBXBuildFile; fileRef = 60096084227FA93E001BE755 /* Github.swift */; };
+		6009608A22837CD9001BE755 /* libplayground.a in CopyFiles */ = {isa = PBXBuildFile; fileRef = 6009608922837CD9001BE755 /* libplayground.a */; };
+		6009608C22837CF4001BE755 /* libximodal.a in CopyFiles */ = {isa = PBXBuildFile; fileRef = 6009608B22837CF3001BE755 /* libximodal.a */; };
 		6018ED18225FB15600B5DF38 /* Style.swift in Sources */ = {isa = PBXBuildFile; fileRef = 6018ED17225FB15600B5DF38 /* Style.swift */; };
-		603B05992272068F00FBD7FC /* libximodal.a in CopyFiles */ = {isa = PBXBuildFile; fileRef = 603B05982272068F00FBD7FC /* libximodal.a */; };
-		603B059B227206C200FBD7FC /* libplayground.a in CopyFiles */ = {isa = PBXBuildFile; fileRef = 603B059A227206C200FBD7FC /* libplayground.a */; };
 		603B059C2272413700FBD7FC /* libximodal.a in Frameworks */ = {isa = PBXBuildFile; fileRef = 609A225F22404CF900A3F007 /* libximodal.a */; };
 		604B0F6022405C88007038E6 /* XiCoreProxy.swift in Sources */ = {isa = PBXBuildFile; fileRef = 604B0F5F22405C88007038E6 /* XiCoreProxy.swift */; };
 		604C7ACC226E572C00F6B277 /* playground.h in Headers */ = {isa = PBXBuildFile; fileRef = 604C7ACB226E572C00F6B277 /* playground.h */; };
@@ -67,7 +67,7 @@
 			dstPath = "";
 			dstSubfolderSpec = 16;
 			files = (
-				603B05992272068F00FBD7FC /* libximodal.a in CopyFiles */,
+				6009608C22837CF4001BE755 /* libximodal.a in CopyFiles */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -77,7 +77,7 @@
 			dstPath = "";
 			dstSubfolderSpec = 16;
 			files = (
-				603B059B227206C200FBD7FC /* libplayground.a in CopyFiles */,
+				6009608A22837CD9001BE755 /* libplayground.a in CopyFiles */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -86,10 +86,10 @@
 /* Begin PBXFileReference section */
 		60096081227F81E4001BE755 /* SharePreferencesViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SharePreferencesViewController.swift; sourceTree = "<group>"; };
 		60096084227FA93E001BE755 /* Github.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Github.swift; sourceTree = "<group>"; };
+		6009608922837CD9001BE755 /* libplayground.a */ = {isa = PBXFileReference; lastKnownFileType = archive.ar; name = libplayground.a; path = ../target/libplayground.a; sourceTree = "<group>"; };
+		6009608B22837CF3001BE755 /* libximodal.a */ = {isa = PBXFileReference; lastKnownFileType = archive.ar; name = libximodal.a; path = ../target/libximodal.a; sourceTree = "<group>"; };
 		6018ED17225FB15600B5DF38 /* Style.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; name = Style.swift; path = RustPlayground/Style.swift; sourceTree = SOURCE_ROOT; };
 		603608D2224EC693002CEAC6 /* xicore.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = xicore.h; path = "../xi-ffi/xicore.h"; sourceTree = "<group>"; };
-		603B05982272068F00FBD7FC /* libximodal.a */ = {isa = PBXFileReference; lastKnownFileType = archive.ar; name = libximodal.a; path = "../xi-ffi/target/libximodal.a"; sourceTree = "<group>"; };
-		603B059A227206C200FBD7FC /* libplayground.a */ = {isa = PBXFileReference; lastKnownFileType = archive.ar; name = libplayground.a; path = "../playground-utils-ffi/target/libplayground.a"; sourceTree = "<group>"; };
 		604B0F5F22405C88007038E6 /* XiCoreProxy.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = XiCoreProxy.swift; sourceTree = "<group>"; };
 		604C7AC7226E56DC00F6B277 /* libplayground.a */ = {isa = PBXFileReference; explicitFileType = archive.ar; includeInIndex = 0; path = libplayground.a; sourceTree = BUILT_PRODUCTS_DIR; };
 		604C7ACB226E572C00F6B277 /* playground.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = playground.h; path = "../playground-utils-ffi/playground.h"; sourceTree = "<group>"; };
@@ -166,11 +166,11 @@
 		606644DE223FFED7006215A0 = {
 			isa = PBXGroup;
 			children = (
+				6009608B22837CF3001BE755 /* libximodal.a */,
+				6009608922837CD9001BE755 /* libplayground.a */,
 				606644E9223FFED7006215A0 /* RustPlayground */,
 				606644FC223FFED9006215A0 /* ModalInputTestTests */,
 				606644E8223FFED7006215A0 /* Products */,
-				603B05982272068F00FBD7FC /* libximodal.a */,
-				603B059A227206C200FBD7FC /* libplayground.a */,
 				609A2269224052B000A3F007 /* ModalInputTest-Bridging-Header.h */,
 				604C7ACB226E572C00F6B277 /* playground.h */,
 				609A22662240504100A3F007 /* libximodal.h */,
@@ -415,7 +415,7 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
-			shellScript = "# When building from Xcode we want to ensure that `cargo` is in PATH.\n# as a convenience, add the default cargo install location\nexport PATH=\"$PATH:${HOME}/.cargo/bin\"\n\nset -e\n\nif [[ $CONFIGURATION = \"Debug\" ]]; then\nRUST_CONFIGURATION=\"debug\"\nRUST_CONFIGURATION_FLAG=\"\"\nelse\nRUST_CONFIGURATION=\"release\"\nRUST_CONFIGURATION_FLAG=\"--release\"\nfi\n\nCRATE_ROOT=\"${SRCROOT}/../playground-utils-ffi\"\nOUTDIR=\"$CRATE_ROOT/target/\"\nPRODUCT_NAME=\"libplayground.a\"\n\ncd \"${CRATE_ROOT}\"\n\necho \"building ${CRATE_ROOT}, conf ${RUST_CONFIGURATION}, action ${ACTION}\"\n\nif [[ ${ACTION:-build} = \"build\" || $ACTION = \"install\" ]]; then\ncargo build $RUST_CONFIGURATION_FLAG\ncp \"${OUTDIR}/${RUST_CONFIGURATION}/${PRODUCT_NAME}\" \"${OUTDIR}/${PRODUCT_NAME}\"\nfi\n\nset +e\n";
+			shellScript = "# When building from Xcode we want to ensure that `cargo` is in PATH.\n# as a convenience, add the default cargo install location\nexport PATH=\"$PATH:${HOME}/.cargo/bin\"\n\nset -e\n\nif [[ $CONFIGURATION = \"Debug\" ]]; then\nRUST_CONFIGURATION=\"debug\"\nRUST_CONFIGURATION_FLAG=\"\"\nelse\nRUST_CONFIGURATION=\"release\"\nRUST_CONFIGURATION_FLAG=\"--release\"\nfi\n\nCRATE_ROOT=\"${SRCROOT}/../playground-utils-ffi\"\nOUTDIR=\"${SRCROOT}/../target/\"\nPRODUCT_NAME=\"libplayground.a\"\n\ncd \"${CRATE_ROOT}\"\n\necho \"building ${CRATE_ROOT}, conf ${RUST_CONFIGURATION}, action ${ACTION}\"\n\nif [[ ${ACTION:-build} = \"build\" || $ACTION = \"install\" ]]; then\ncargo build $RUST_CONFIGURATION_FLAG\ncp \"${OUTDIR}/${RUST_CONFIGURATION}/${PRODUCT_NAME}\" \"${OUTDIR}/${PRODUCT_NAME}\"\nfi\n\nset +e\n";
 		};
 		609A226322404D0D00A3F007 /* ShellScript */ = {
 			isa = PBXShellScriptBuildPhase;
@@ -432,7 +432,7 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
-			shellScript = "# When building from Xcode we want to ensure that `cargo` is in PATH.\n# as a convenience, add the default cargo install location\nexport PATH=\"$PATH:${HOME}/.cargo/bin\"\n\nset -e\n\nif [[ $CONFIGURATION = \"Debug\" ]]; then\nRUST_CONFIGURATION=\"debug\"\nRUST_CONFIGURATION_FLAG=\"\"\nelse\nRUST_CONFIGURATION=\"release\"\nRUST_CONFIGURATION_FLAG=\"--release\"\nfi\n\nCRATE_ROOT=\"${SRCROOT}/../xi-ffi\"\nOUTDIR=\"$CRATE_ROOT/target/\"\nPRODUCT_NAME=\"libximodal.a\"\n\ncd \"${CRATE_ROOT}\"\n\necho \"building ${CRATE_ROOT}, conf ${RUST_CONFIGURATION}, action ${ACTION}\"\n\nif [[ ${ACTION:-build} = \"build\" || $ACTION = \"install\" ]]; then\ncargo build $RUST_CONFIGURATION_FLAG\ncp \"${OUTDIR}/${RUST_CONFIGURATION}/${PRODUCT_NAME}\" \"${OUTDIR}/${PRODUCT_NAME}\"\nfi\n\nset +e\n";
+			shellScript = "# When building from Xcode we want to ensure that `cargo` is in PATH.\n# as a convenience, add the default cargo install location\nexport PATH=\"$PATH:${HOME}/.cargo/bin\"\n\nset -e\n\nif [[ $CONFIGURATION = \"Debug\" ]]; then\nRUST_CONFIGURATION=\"debug\"\nRUST_CONFIGURATION_FLAG=\"\"\nelse\nRUST_CONFIGURATION=\"release\"\nRUST_CONFIGURATION_FLAG=\"--release\"\nfi\n\nCRATE_ROOT=\"${SRCROOT}/../xi-ffi\"\nOUTDIR=\"${SRCROOT}/../target/\"\nPRODUCT_NAME=\"libximodal.a\"\n\ncd \"${CRATE_ROOT}\"\n\necho \"building ${CRATE_ROOT}, conf ${RUST_CONFIGURATION}, action ${ACTION}\"\n\nif [[ ${ACTION:-build} = \"build\" || $ACTION = \"install\" ]]; then\ncargo build $RUST_CONFIGURATION_FLAG\ncp \"${OUTDIR}/${RUST_CONFIGURATION}/${PRODUCT_NAME}\" \"${OUTDIR}/${PRODUCT_NAME}\"\nfi\n\nset +e\n";
 		};
 /* End PBXShellScriptBuildPhase section */