diff --git a/.gitignore b/.gitignore
index a356d58..1105bd7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -10,3 +10,5 @@
 /mkosi-12.tar.gz
 /mkosi-13.tar.gz
 /mkosi-14.tar.gz
+/mkosi-15.tar.gz
+/mkosi-15.1.tar.gz
diff --git a/mkosi.spec b/mkosi.spec
index fcf91df..c44e8f0 100644
--- a/mkosi.spec
+++ b/mkosi.spec
@@ -1,22 +1,32 @@
 Name:           mkosi
-Version:        14
+Version:        15.1
 Release:        %autorelease
 Summary:        Create bespoke OS images
 
-License:        LGPLv2+
+License:        LGPL-2.1-or-later
 URL:            https://github.com/systemd/mkosi
-Source0:        https://github.com/systemd/mkosi/archive/v%{version}/%{name}-%{version}.tar.gz
+Source:         https://github.com/systemd/mkosi/archive/v%{version}/%{name}-%{version}.tar.gz
 
 BuildArch:      noarch
 BuildRequires:  python3-devel
-BuildRequires:  python3-setuptools
+BuildRequires:  pyproject-rpm-macros
 BuildRequires:  python3-pytest
 BuildRequires:  binutils
 BuildRequires:  python3dist(pexpect)
+BuildRequires:  pandoc
+# for tests
+BuildRequires:  systemd
 
 %global recoreq %{?el7:Requires}%{!?el7:Recommends}
 
-%{recoreq}:     dnf
+%bcond tests 1
+
+# mkosi wants the uncompressed man page to show via 'mkosi documentation'
+%global __brp_compress true
+
+Requires:       bubblewrap
+Requires:       systemd-repart
+
 %{recoreq}:     gnupg
 %{recoreq}:     xz
 %{recoreq}:     tar
@@ -34,7 +44,9 @@ Recommends:     cpio
 Recommends:     zstd
 Recommends:     python3dist(argcomplete)
 Recommends:     python3dist(cryptography)
-Recommends:     python3dist(pexpect)
+Recommends:     (dnf5 or dnf)
+%else
+Recommends:     dnf
 %endif
 
 %description
@@ -42,34 +54,41 @@ A fancy wrapper around "dnf --installroot", "debootstrap", "pacman", "zypper",
 "emerge", and "swupd-extract" that may generate disk images with a number of
 bells and whistles.
 
-Generated images are tailored to the purose. This means GPT disk labels are used
-by default, though MBR disk labels are supported, and only systemd based images
-may be generated.
+Generated images are tailored to the purpose. This means GPT disk labels are
+used and only systemd-based images may be generated.
 
 %prep
 %autosetup -p1
 
+%generate_buildrequires
+%pyproject_buildrequires
+
 %build
-%py3_build
+tools/make-man-page.sh
+
+%pyproject_wheel
 
 %install
-%py3_install
+%pyproject_install
+%pyproject_save_files mkosi
+
+mkdir -p %{buildroot}%{_mandir}/man1
+ln -s -t %{buildroot}%{_mandir}/man1/ \
+         ../../../..%{python3_sitelib}/mkosi/resources/mkosi.1
 
-%files
+%files -f %pyproject_files
 %license LICENSE
 %doc README.md
 %_bindir/mkosi
-%{python3_sitelib}/mkosi/
-%{python3_sitelib}/mkosi-%{version}-py*.egg-info/
 %_mandir/man1/mkosi.1*
 
 %check
-%pytest tests/ -v \
-  --ignore=tests/test_config_parser.py \
-  -k 'not test_copy_file'
+%if %{with tests}
+%pytest tests/ -v
 
 # just a smoke test for syntax or import errors
-%buildroot/usr/bin/mkosi --help >/dev/null
+%py3_test_envvars %{buildroot}%{_bindir}/mkosi --help >/dev/null
+%endif
 
 %changelog
 %autochangelog
diff --git a/sources b/sources
index 76952bd..41249e4 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (mkosi-14.tar.gz) = 33a387bda9bd74415719d9081373936ead331135fc5c17276bace1a999ec1b90e6caea37fb0fd832bc89ca75635f3dbd1ed19af7679a7d8a59c85a36120d737f
+SHA512 (mkosi-15.1.tar.gz) = 3b65c6b964aa2bde12117b7b2c3e4be0ac72036a92a115f1e93e7be0b3b0aa0bd3adb753ee49865723a9bc677bc4492416caafff4fec3ffd942de78357c11608