diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
new file mode 100644
index 0000000..a6d03e3
--- /dev/null
+++ b/.gitlab-ci.yml
@@ -0,0 +1,13 @@
+variables:
+  CARGO_HOME: /tmp/cargo
+  CARGO_TARGET_DIR: /tmp/cargo/target
+
+build:
+  script:
+    - nix-shell -p rustc cargo --run "sh -c '
+      rustc -vV &&
+      cargo -vV &&
+      cargo build'"
+test:
+  script:
+    - nix-shell -p rustc cargo --run 'cargo test'
diff --git a/Cargo.lock b/Cargo.lock
index d07c290..3eb3ae7 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -111,6 +111,7 @@ dependencies = [
 [[package]]
 name = "svg_fmt"
 version = "0.4.0"
+source = "git+https://github.com/FliegendeWurst/rust_debug?rev=c664b5d24dbcaf6e6fdd7c329dde231c5b05377e#c664b5d24dbcaf6e6fdd7c329dde231c5b05377e"
 
 [[package]]
 name = "syn"
diff --git a/Cargo.toml b/Cargo.toml
index 9deafec..5d559c4 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -14,6 +14,6 @@ console_error_panic_hook = "0.1.6"
 console_log = "0.2.0"
 itertools = "0.10.0"
 log = "0.4.14"
-svg_fmt = { path = "../rust_debug/svg_fmt" }
+svg_fmt = { git = "https://github.com/FliegendeWurst/rust_debug", rev = "c664b5d24dbcaf6e6fdd7c329dde231c5b05377e" }
 wasm-bindgen = "0.2.71"
 web-sys = { version = "0.3.48", features = ["Window", "Document", "Location", "HtmlCollection", "HtmlElement", "HtmlSelectElement", "CssStyleDeclaration", "HtmlTextAreaElement", "HtmlInputElement"] }
diff --git a/src/lib.rs b/src/lib.rs
index 3a37264..15161c6 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -365,7 +365,7 @@ fn test_3var() {
 	]);
 	let prime = find_core(&fun, &mut [A, B, C], Zero, &groups).0;
 	assert_eq!(prime, vec![
-		vec![(A, Zero), (B, Zero)],
-		vec![(A, One), (C, Zero)],
+		&[(A, Zero), (B, Zero)],
+		&[(A, One), (C, Zero)],
 	]);
 }