diff --git a/mzte-nv/build.zig b/mzte-nv/build.zig
index dc790a0..0ca3738 100644
--- a/mzte-nv/build.zig
+++ b/mzte-nv/build.zig
@@ -24,7 +24,10 @@ pub fn build(b: *std.build.Builder) !void {
     lib.linkLibC();
     lib.linkSystemLibrary("luajit");
 
-    lib.strip = mode != .Debug;
+    lib.strip = switch (mode) {
+        .Debug, .ReleaseSafe => false,
+        .ReleaseFast, .ReleaseSmall => true,
+    };
     lib.unwind_tables = true;
 
     b.getInstallStep().dependOn(&b.addInstallFile(lib.getOutputSource(), "share/nvim/mzte-nv.so").step);
diff --git a/mzte-nv/src/ffi.zig b/mzte-nv/src/ffi.zig
index 2dfc4fa..45469cf 100644
--- a/mzte-nv/src/ffi.zig
+++ b/mzte-nv/src/ffi.zig
@@ -11,13 +11,20 @@ pub fn luaFunc(comptime func: fn (*c.lua_State) anyerror!c_int) c.lua_CFunction
     return &struct {
         fn f(l: ?*c.lua_State) callconv(.C) c_int {
             return func(l.?) catch |e| {
-                var buf: [128]u8 = undefined;
-                const err_s = std.fmt.bufPrintZ(
-                    &buf,
-                    "Zig Error: {s}",
-                    .{@errorName(e)},
-                ) catch unreachable;
-                c.lua_pushstring(l, err_s.ptr);
+                var buf: [1024 * 4]u8 = undefined;
+                var fbs = std.io.fixedBufferStream(&buf);
+                fbs.writer().print("Zig Error: {s}\n", .{@errorName(e)}) catch @panic("OOM");
+                if (@errorReturnTrace()) |ert| {
+                    std.debug.writeStackTrace(
+                        ert.*,
+                        fbs.writer(),
+                        std.heap.c_allocator,
+                        std.debug.getSelfDebugInfo() catch @panic("WTF"),
+                        .no_color,
+                    ) catch @panic("OOM");
+                }
+
+                luaPushString(l, fbs.getWritten());
                 _ = c.lua_error(l);
                 unreachable;
             };
diff --git a/setup/commands/setup-nvim-config.rkt b/setup/commands/setup-nvim-config.rkt
index 69568a9..7bab4f9 100644
--- a/setup/commands/setup-nvim-config.rkt
+++ b/setup/commands/setup-nvim-config.rkt
@@ -4,7 +4,7 @@
 
 (define (run)
   (define nvim-config-dir (build-path (find-system-path 'home-dir) ".config" "nvim"))
-  (install-zig "mzte-nv")
+  (install-zig "mzte-nv" "ReleaseSafe")
   (rm nvim-config-dir)
   (copy "mzte-nv/conf" nvim-config-dir)
   (cmd "mzte-nv-compile" (path->string nvim-config-dir))
diff --git a/setup/common.rkt b/setup/common.rkt
index 379bfee..13eca7b 100644
--- a/setup/common.rkt
+++ b/setup/common.rkt
@@ -34,26 +34,26 @@
 (define-logging copy copy-directory/files)
 
 (define-logging install-zig
-                (λ (path)
-                  (parameterize ([current-directory path] [log-calls #f])
-                    (cmd "zig" "build" "-p" (output-bin-path) "-Doptimize=ReleaseFast"))))
+  (λ (path [mode "ReleaseFast"])
+    (parameterize ([current-directory path] [log-calls #f])
+      (cmd "zig" "build" "-p" (output-bin-path) (string-append "-Doptimize=" mode)))))
 
 (define-logging install-rust
-                (λ (path)
-                  (parameterize ([current-directory path] [log-calls #f])
-                    (cmd "cargo"
-                         "-Z"
-                         "unstable-options"
-                         "build"
-                         "--release"
-                         "--out-dir"
-                         (build-path (output-bin-path) "bin")))))
+  (λ (path)
+    (parameterize ([current-directory path] [log-calls #f])
+      (cmd "cargo"
+           "-Z"
+           "unstable-options"
+           "build"
+           "--release"
+           "--out-dir"
+           (build-path (output-bin-path) "bin")))))
 
 (define-logging
- install-roswell
- (λ (path)
-   (parameterize ([log-calls #f])
-     (match-let*-values ([(_ filename _) (split-path path)]
-                         [(outpath)
-                          (build-path (output-bin-path) "bin" (path-replace-extension filename ""))])
-       (cmd "ros" "dump" "executable" path "-o" outpath)))))
+  install-roswell
+  (λ (path)
+    (parameterize ([log-calls #f])
+      (match-let*-values ([(_ filename _) (split-path path)]
+                          [(outpath)
+                           (build-path (output-bin-path) "bin" (path-replace-extension filename ""))])
+                         (cmd "ros" "dump" "executable" path "-o" outpath)))))