diff --git a/.gitignore b/.gitignore
index c14c025..64c96ce 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1 @@
 /variant-lite-2.0.0.tar.gz
-/variant-lite-3.0.0.tar.gz
diff --git a/0001-Downstream-patch-disable-C-17-tests-since-they-fail-.patch b/0001-Downstream-patch-disable-C-17-tests-since-they-fail-.patch
new file mode 100644
index 0000000..e06eda9
--- /dev/null
+++ b/0001-Downstream-patch-disable-C-17-tests-since-they-fail-.patch
@@ -0,0 +1,29 @@
+From d99e39b73945750d5db93ab20c61e47ad186e16d Mon Sep 17 00:00:00 2001
+From: "Benjamin A. Beasley" <code@musicinmybrain.net>
+Date: Mon, 20 Jan 2025 14:05:16 -0500
+Subject: [PATCH] Downstream patch: disable C++17 tests since they fail to
+ compile on GCC 14
+
+https://github.com/martinmoene/variant-lite/issues/50
+---
+ test/CMakeLists.txt | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
+index c0ab071..9c5602a 100644
+--- a/test/CMakeLists.txt
++++ b/test/CMakeLists.txt
+@@ -68,7 +68,9 @@ elseif( CMAKE_CXX_COMPILER_ID MATCHES "GNU|Clang|AppleClang" )
+             set( HAS_CPP14_FLAG TRUE )
+         endif()
+         if( NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 7.1.0 )
+-            set( HAS_CPP17_FLAG TRUE )
++            # Downstream patch: disable C++17 tests since they fail to compile on GCC 14
++            # https://github.com/martinmoene/variant-lite/issues/50
++            set( HAS_CPP17_FLAG FALSE )
+         endif()
+ 
+     # AppleClang: available -std flags depends on version
+-- 
+2.48.1
+
diff --git a/sources b/sources
index 37c7879..3a5638e 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (variant-lite-3.0.0.tar.gz) = e85f27179a997777e3f9ad1db5f424f0838c474904c9df6a6b9cce817ca57144b0e23d561b9514edd97f8fff88b2a372c5afccc46a15b35e4b7d287e6b197a9e
+SHA512 (variant-lite-2.0.0.tar.gz) = dd255d3664b42305e58c14a0bfc7d6ba54462656001e4e79c14fdb64a6f54b57a00ec3cf10d006614c849528529c6897031df4b52a49ecb91531e89d366d6a9c
diff --git a/variant-lite.rpmlintrc b/variant-lite.rpmlintrc
index 93f22bd..826c1d0 100644
--- a/variant-lite.rpmlintrc
+++ b/variant-lite.rpmlintrc
@@ -1,2 +1,2 @@
 # CMake files for this header-only library still go under %{_libdir}:
-addFilter(r"variant-lite-devel\..*: only-non-binary-in-usr-lib")
+addFilter(r"optional-lite-devel\..*: only-non-binary-in-usr-lib")
diff --git a/variant-lite.spec b/variant-lite.spec
index 704fd0b..95a5d04 100644
--- a/variant-lite.spec
+++ b/variant-lite.spec
@@ -2,14 +2,14 @@
 # numbers of args and/or types? Packaging guidelines don’t *require* us to do
 # this, and there is probably no benefit in this case, but it is nice to
 # demonstrate how it can be done if needed.
-%bcond regenerate 0
-%dnl %global max_types 16
-%dnl %global max_types 5
+%bcond_with regenerate
+# %%global max_types 16
+# %%global max_types 5
 
-%bcond ctest 1
+%bcond_without tests
 
 Name:           variant-lite
-Version:        3.0.0
+Version:        2.0.0
 Release:        %autorelease
 Summary:        Represent a type-safe union
 
@@ -17,19 +17,19 @@ License:        BSL-1.0
 URL:            https://github.com/martinmoene/variant-lite
 Source:         %{url}/archive/v%{version}/variant-lite-%{version}.tar.gz
 
-BuildSystem:    cmake
-BuildOption(conf): %{shrink:
-    -DVARIANT_LITE_OPT_BUILD_TESTS:BOOL=%{?with_ctest:ON}%{?!with_ctest:OFF}
-    }
+# Downstream patch: disable C++17 tests since they fail to compile on GCC 14
+# https://github.com/martinmoene/variant-lite/issues/50
+Patch:          0001-Downstream-patch-disable-C-17-tests-since-they-fail-.patch
 
 BuildRequires:  gcc-c++
+BuildRequires:  cmake
 
 %if %{with regenerate}
 BuildRequires:  python3-devel
 BuildRequires:  %{py3_dist jinja2}
 %endif
 
-%if %{with ctest}
+%if %{with tests}
 # Required for testing; bundled upstream, unbundled in %%prep.
 # Header-only library (-static required by policy)
 BuildRequires:  lest-devel lest-static
@@ -56,29 +56,46 @@ The %{name}-devel package contains libraries and header files for
 developing applications that use %{name}.
 
 
-%prep -a
+%prep
+%autosetup -n variant-lite-%{version} -p1
+
 # Unbundle lest
-rm --recursive --verbose test/lest
-ln --symbolic /usr/include/lest test/lest
+rm -rvf test/lest
+ln -s /usr/include/lest test/lest
 
 
 %if %{with regenerate}
-%generate_buildrequires -a
-%pyproject_buildrequires --no-use-build-system
+%generate_buildrequires
+%pyproject_buildrequires -N
 %endif
 
 
+%build
+%cmake %{?!with_tests:-DVARIANT_LITE_OPT_BUILD_TESTS:BOOL=OFF}
 %if %{with regenerate}
-%build -p
 %{python3} script/generate_header.py \
     %{?max_types:--max-types %{max_types}} \
     %{?max_args:--max-args %{max_args}} \
     --verbose
 %endif
+%cmake_build
+
+
+%install
+%cmake_install
+
+
+%check
+%if %{with tests}
+%ctest
+%endif
 
 
 %files devel
 %license LICENSE.txt
+# We don’t package CHANGES.txt because it was never updated after “version
+# 0.0.0-alpha 2016-10-23.” If we did, we would need to fix its encoding,
+# https://github.com/martinmoene/variant-lite/pull/51.
 %doc README.md
 %doc example/