Switch to uv build backend (#13137)

It's probably faster, I didn't measure.

Author: alex

.github/requirements/build-requirements.in

@@ -4,7 +4,7 @@ cffi>=1.12; platform_python_implementation != 'PyPy'
 maturin>=1,<2
 
 # Must be kept sync with build-system.requires at vectors/pyproject.toml
-flit_core >=3.2,<4
+uv_build>=0.7.19,<0.8.0
 
 # WARN: changing the requirements here DOES NOT update the dependencies used
 # for building at the github workflow -- it uses build-requirements.txt

.github/requirements/build-requirements.txt

@@ -69,10 +69,6 @@ cffi==1.17.1 ; platform_python_implementation != 'PyPy' \
     --hash=sha256:f7f5baafcc48261359e14bcd6d9bff6d4b28d9103847c9e136694cb0501aef87 \
     --hash=sha256:fc48c783f9c87e60831201f2cce7f3b2e4846bf4d8728eabe54d60700b318a0b
     # via -r build-requirements.in
-flit-core==3.12.0 \
-    --hash=sha256:18f63100d6f94385c6ed57a72073443e1a71a4acb4339491615d0f16d6ff01b2 \
-    --hash=sha256:e7a0304069ea895172e3c7bb703292e992c5d1555dd1233ab7b5621b5b69e62c
-    # via -r build-requirements.in
 maturin==1.9.0 \
     --hash=sha256:18d77e395f62a0227697098526be6becb3ceea34a79f338b1b716fb96e42a1b2 \
     --hash=sha256:289d0c2925a8c8ba3ce058e7b691b1c274fd06e36a915232f4e07fa62266f9b6 \
@@ -130,3 +126,23 @@ tomli==2.2.1 ; python_full_version < '3.11' \
     --hash=sha256:ece47d672db52ac607a3d9599a9d48dcb2f2f735c6c2d1f34130085bb12b112a \
     --hash=sha256:f4039b9cbc3048b2416cc57ab3bda989a6fcf9b36cf8937f01a6e731b64f80d7
     # via maturin
+uv-build==0.7.19 \
+    --hash=sha256:08a89d025f815a7667241259c5472a7a66393243292343bb3665641176219306 \
+    --hash=sha256:365a380524ebb8e3a4f89d4ff1b64ae5e8a6f5c6163ce5746f7173a216ee582d \
+    --hash=sha256:40d990010b3ed44e41ec274c5be028290621d32bac3209013689689d255671d8 \
+    --hash=sha256:515847580eda85be275cd2d30e2116b076aba18860d9bbe0549c80775481bb39 \
+    --hash=sha256:5dcba35d904380dd12f1f0c5fe9fa53ef6698ab5562fd2b4f67659420ddbcabf \
+    --hash=sha256:628e147cfc02bc2fd27ac1a2b0b834d823a5754af695db0c50f0501800fa59fe \
+    --hash=sha256:64d02fd0f2fc18e403172f684607e887e1c55c4a0dce97d69005c12d580bf8bd \
+    --hash=sha256:70296f96148caac8ce63786f041eeeb143396145621d665e644d86938a4a858e \
+    --hash=sha256:7b7e78d2aaed183bd11766b7cf68f08e743194efc1b0d5adcb06863a925f4ccd \
+    --hash=sha256:98aa36db425dee536ce545a54bc5ed4e74c4333ace2b90454f14085def14a57f \
+    --hash=sha256:cef9cf4ec51a6a1d33b4ef14c91b4f5a08acbf8c1588253b5daed6fbe990e18c \
+    --hash=sha256:d43900fc755803f5c17d5e625e8ed0f11a075846cf88fcd262869b0d95f48141 \
+    --hash=sha256:d444467f71264afb16b5dee4956de91e463de45462a3aa67a4c124550026228d \
+    --hash=sha256:d90b5a639062bd7678391d99151507a782a25fffa0e22c9bf229bc663f53e7cd \
+    --hash=sha256:e28cc29b4d7687ab55343d934d324cfd2c6436131333e54b12c4e1b41b0270a5 \
+    --hash=sha256:ec40587520ef87d97197fc49ba7f95fdc1864be24d26818ce32517d1afbe4ced \
+    --hash=sha256:ec67de3e76f66501ec026264dba7a92673179488e438715d8794e6904fd28eaa \
+    --hash=sha256:f3315b38a296ac237ea0590f6f432ea6dc2b1ce74245f93388b3e1baa623848e
+    # via -r build-requirements.in

vectors/pyproject.toml

@@ -1,6 +1,6 @@
 [build-system]
-requires = ["flit_core >=3.2,<4"]
-build-backend = "flit_core.buildapi"
+requires = ["uv_build>=0.7.19,<0.8.0"]
+build-backend = "uv_build"
 
 [project]
 name = "cryptography_vectors"
@@ -15,5 +15,6 @@ license = {text = "Apache-2.0 OR BSD-3-Clause"}
 [project.urls]
 homepage = "https://github.com/pyca/cryptography"
 
-[tool.flit.sdist]
-include = ["LICENSE", "LICENSE.APACHE", "LICENSE.BSD"]
+[tool.uv.build-backend]
+module-root = ""
+source-include = ["LICENSE", "LICENSE.APACHE", "LICENSE.BSD"]