diff --git a/.build.yml b/.build.yml
index 3110f49..7c2de31 100644
--- a/.build.yml
+++ b/.build.yml
@@ -6,7 +6,6 @@ packages:
   - lua5.3
   - lua5.4
   - luajit
-  - luarocks
 sources:
   - https://git.sr.ht/~xerool/fennel-ls
 tasks:
diff --git a/Makefile b/Makefile
index 6de3860..b76a9be 100644
--- a/Makefile
+++ b/Makefile
@@ -48,7 +48,7 @@ install: $(EXE)
 	mkdir -p $(DESTDIR)$(BINDIR) && cp $< $(DESTDIR)$(BINDIR)/
 
 test: $(EXE)
-	$(FENNEL) $(FENNELFLAGS) test/init.fnl
+	TESTING=1 $(FENNEL) $(FENNELFLAGS) test/init.fnl
 
 ci:
 	$(MAKE) test LUA=lua5.1
@@ -63,9 +63,12 @@ ci:
 	$(MAKE) FENNEL=./old-fennel deps
 	diff -r deps old-deps
 	diff -r fennel old-fennel
+	rm -rf old-deps
+	rm -f old-fennel
 
-	# luarocks
-	luarocks install rockspecs/fennel-ls-scm-4.rockspec --dev --tree my-test-tree
+	# test that luarocks builds properly
+	sudo apt install luarocks
+	luarocks install rockspecs/fennel-ls-scm-4.rockspec --dev --local
 
 clean:
 	rm -f $(EXE)
diff --git a/src/fennel-ls/utils.fnl b/src/fennel-ls/utils.fnl
index 896e740..babd6e8 100644
--- a/src/fennel-ls/utils.fnl
+++ b/src/fennel-ls/utils.fnl
@@ -159,13 +159,14 @@ WARNING: this is only used in the test code, not in the real language server"
         word))))
 
 (fn multi-sym-base [symbol]
+  (local symbol (tostring symbol))
   (if (or (= symbol ".")
           (= symbol "..")
           (= symbol "...")
           (= symbol ":")
           (= symbol "?."))
-    (tostring symbol)
-    (pick-values 1 (: (tostring symbol) :match "[^.:]*"))))
+    symbol
+    (pick-values 1 (symbol:match "[^.:]*"))))
 
 (λ type= [val typ]
   (= (type val) typ))
diff --git a/test/diagnostic.fnl b/test/diagnostic.fnl
index b7d6c64..1c26233 100644
--- a/test/diagnostic.fnl
+++ b/test/diagnostic.fnl
@@ -3,22 +3,22 @@
 (local {: create-client-with-files} (require :test.utils))
 
 (fn find [diagnostics e]
-  "returns the index of the diagnostic "
-   (accumulate [result nil
-                i d (ipairs diagnostics)
-                &until result]
-     (if (and (or (= e.message nil)
-                  (if (= (type e.message) "function")
-                    (e.message d.message)
-                    (= e.message d.message)))
-              (or (= e.code nil)
-                  (= e.code d.code))
-              (or (= e.range nil)
-                  (and (= e.range.start.line      d.range.start.line)
-                       (= e.range.start.character d.range.start.character)
-                       (= e.range.end.line        d.range.end.line)
-                       (= e.range.end.character   d.range.end.character))))
-       i)))
+  "returns the index of the diagnostic that matches `e`"
+  (accumulate [result nil
+               i d (ipairs diagnostics)
+               &until result]
+    (if (and (or (= e.message nil)
+                 (if (= (type e.message) "function")
+                   (e.message d.message)
+                   (= e.message d.message)))
+             (or (= e.code nil)
+                 (= e.code d.code))
+             (or (= e.range nil)
+                 (and (= e.range.start.line      d.range.start.line)
+                      (= e.range.start.character d.range.start.character)
+                      (= e.range.end.line        d.range.end.line)
+                      (= e.range.end.character   d.range.end.character))))
+      i)))
 
 (fn check [file-contents expected unexpected]
   (let [{: diagnostics} (create-client-with-files file-contents)]