root: fix rust build with uv-installed Python (#21858)

CODEOWNERS

@@ -14,6 +14,7 @@ pyproject.toml                          @goauthentik/backend
 uv.lock                                 @goauthentik/backend
 Cargo.toml                              @goauthentik/backend
 Cargo.lock                              @goauthentik/backend
+build.rs                                @goauthentik/backend
 go.mod                                  @goauthentik/backend
 go.sum                                  @goauthentik/backend
 .cargo/                                 @goauthentik/backend

Cargo.lock

@@ -198,6 +198,7 @@ dependencies = [
  "metrics-exporter-prometheus",
  "nix 0.31.2",
  "pyo3",
+ "pyo3-build-config",
  "sqlx",
  "tokio",
  "tracing",

Cargo.toml

@@ -49,6 +49,7 @@ nix = { version = "= 0.31.2", features = ["hostname", "signal"] }
 notify = "= 8.2.0"
 pin-project-lite = "= 0.2.17"
 pyo3 = "= 0.28.3"
+pyo3-build-config = "= 0.28.3"
 regex = "= 1.12.3"
 reqwest = { version = "= 0.13.2", features = [
   "form",
@@ -260,6 +261,9 @@ default = ["core", "proxy"]
 core = ["ak-common/core", "dep:pyo3", "dep:sqlx"]
 proxy = ["ak-common/proxy"]
 
+[build-dependencies]
+pyo3-build-config.workspace = true
+
 [dependencies]
 ak-axum.workspace = true
 ak-common.workspace = true

build.rs

@@ -0,0 +1,6 @@
+fn main() {
+    #[cfg(feature = "core")]
+    {
+        pyo3_build_config::add_libpython_rpath_link_args();
+    }
+}

lifecycle/container/Dockerfile

@@ -147,6 +147,7 @@ RUN --mount=type=bind,target=rust-toolchain.toml,src=rust-toolchain.toml \
     --mount=type=bind,target=Cargo.toml,src=Cargo.toml \
     --mount=type=bind,target=Cargo.lock,src=Cargo.lock \
     --mount=type=bind,target=.cargo/,src=.cargo/ \
+    --mount=type=bind,target=build.rs,src=build.rs \
     --mount=type=bind,target=src/,src=src/ \
     --mount=type=bind,target=packages/ak-axum,src=packages/ak-axum \
     --mount=type=bind,target=packages/ak-common,src=packages/ak-common \