diff --git a/anda/stardust/comet/nightly/anda.hcl b/anda/stardust/comet/nightly/anda.hcl
new file mode 100644
index 0000000000..af380fc21e
--- /dev/null
+++ b/anda/stardust/comet/nightly/anda.hcl
@@ -0,0 +1,8 @@
+project pkg {
+	rpm {
+		spec = "stardust-comet-nightly.spec"
+	}
+	labels {
+	  nightly = 1
+	}
+}
diff --git a/anda/stardust/comet/nightly/stardust-comet-nightly.spec b/anda/stardust/comet/nightly/stardust-comet-nightly.spec
new file mode 100644
index 0000000000..092d8477d1
--- /dev/null
+++ b/anda/stardust/comet/nightly/stardust-comet-nightly.spec
@@ -0,0 +1,43 @@
+%global commit 52b442c42d8b2938f16adfe42ab1ac0b5d29a137
+%global commit_date 20251218
+%global shortcommit %(c=%{commit}; echo ${c:0:7})
+# Exclude input files from mangling
+%global __brp_mangle_shebangs_exclude_from ^/usr/src/.*$
+
+Name:           stardust-xr-comet-nightly
+Version:        0~%{commit_date}git.%{shortcommit}
+Release:        1%?dist
+Summary:        Annotate things in Stardust XR
+URL:            https://github.com/StardustXR/comet
+Source0:        %url/archive/%commit/comet-%commit.tar.gz
+License:        MIT
+BuildRequires:  cargo cmake anda-srpm-macros cargo-rpm-macros mold
+
+Provides:       comet-nightly stardust-comet-nightly
+Conflicts:      stardust-xr-comet
+Packager:       Owen Zimmerman <owen@fyralabs.com>
+
+%description
+%summary.
+
+%prep
+%autosetup -n comet-%commit
+%cargo_prep_online
+
+%build
+
+%install
+%define __cargo_common_opts %{?_smp_mflags} -Z avoid-dev-deps --locked
+%cargo_install
+%cargo_license_summary_online
+%{cargo_license_online} > LICENSE.dependencies
+
+%files
+%_bindir/comet
+%license LICENSE
+%license LICENSE.dependencies
+%doc README.md
+
+%changelog
+* Sun Jan 11 2026 Owen Zimmerman <owen@fyralabs.com>
+- Initial commit (port from stable)
diff --git a/anda/stardust/comet/nightly/update.rhai b/anda/stardust/comet/nightly/update.rhai
new file mode 100644
index 0000000000..e9531f24ba
--- /dev/null
+++ b/anda/stardust/comet/nightly/update.rhai
@@ -0,0 +1,5 @@
+rpm.global("commit", gh_commit("StardustXR/comet"));
+if rpm.changed() {
+  rpm.release();
+  rpm.global("commit_date", date());
+}
diff --git a/anda/stardust/comet/anda.hcl b/anda/stardust/comet/stable/anda.hcl
similarity index 100%
rename from anda/stardust/comet/anda.hcl
rename to anda/stardust/comet/stable/anda.hcl
diff --git a/anda/stardust/comet/stardust-comet.spec b/anda/stardust/comet/stable/stardust-comet.spec
similarity index 100%
rename from anda/stardust/comet/stardust-comet.spec
rename to anda/stardust/comet/stable/stardust-comet.spec
diff --git a/anda/stardust/comet/update.rhai b/anda/stardust/comet/stable/update.rhai
similarity index 100%
rename from anda/stardust/comet/update.rhai
rename to anda/stardust/comet/stable/update.rhai