Add support for GNU/Hurd

Changelog.md

@@ -4,6 +4,7 @@
 
 * Improve wheel reproducibility by sorting external libraries [#2261](https://github.com/PyO3/maturin/pull/2261)
 * Fix Readme and pyproject.toml inclusions for workspace where the bindings crate is not in the root in [#2262](https://github.com/PyO3/maturin/pull/2262)
+* Add support for GNU/Hurd target in [#2306](https://github.com/PyO3/maturin/pull/2306)
 
 ## [1.7.4]
 

src/python_interpreter/config.rs

@@ -283,7 +283,7 @@ impl InterpreterConfig {
             InterpreterKind::GraalPy => abi_tag.unwrap_or_else(|| GRAALPY_ABI_TAG.to_string()),
         };
         let file_ext = if target.is_windows() { "pyd" } else { "so" };
-        let ext_suffix = if target.is_linux() || target.is_macos() {
+        let ext_suffix = if target.is_linux() || target.is_macos() || target.is_hurd() {
             let target_env = target.get_python_target_env(interpreter_kind, (major, minor));
             match interpreter_kind {
                 InterpreterKind::CPython => ext_suffix.unwrap_or_else(|| {

src/python_interpreter/mod.rs

@@ -466,7 +466,8 @@ impl PythonInterpreter {
         let target = &context.target;
         let use_sysconfig_platform = target.is_windows()
             || (target.is_linux() && platform_tags.iter().any(|tag| !tag.is_portable()))
-            || target.is_illumos();
+            || target.is_illumos()
+            || target.is_hurd();
         let platform = if use_sysconfig_platform {
             if let Some(platform) = self.platform.clone() {
                 platform

src/target.rs

@@ -35,6 +35,7 @@ pub enum Os {
     Emscripten,
     Wasi,
     Aix,
+    Hurd,
 }
 
 impl fmt::Display for Os {
@@ -54,6 +55,7 @@ impl fmt::Display for Os {
             Os::Emscripten => write!(f, "Emscripten"),
             Os::Wasi => write!(f, "Wasi"),
             Os::Aix => write!(f, "AIX"),
+            Os::Hurd => write!(f, "Hurd"),
         }
     }
 }
@@ -193,6 +195,7 @@ fn get_supported_architectures(os: &Os) -> Vec<Arch> {
         Os::Solaris => vec![Arch::X86_64, Arch::Sparc64],
         Os::Emscripten | Os::Wasi => vec![Arch::Wasm32],
         Os::Aix => vec![Arch::Powerpc64],
+        Os::Hurd => vec![Arch::X86, Arch::X86_64],
     }
 }
 
@@ -255,6 +258,7 @@ impl Target {
             OperatingSystem::Emscripten => Os::Emscripten,
             OperatingSystem::Wasi | OperatingSystem::WasiP1 | OperatingSystem::WasiP2 => Os::Wasi,
             OperatingSystem::Aix => Os::Aix,
+            OperatingSystem::Hurd => Os::Hurd,
             unsupported => bail!("The operating system {:?} is not supported", unsupported),
         };
 
@@ -426,6 +430,7 @@ impl Target {
             // This isn't real, there's no sys.platform here
             Os::Wasi => "wasi",
             Os::Aix => "aix",
+            Os::Hurd => "gnu0",
         }
     }
 
@@ -510,7 +515,8 @@ impl Target {
             | Os::Haiku
             | Os::Emscripten
             | Os::Wasi
-            | Os::Aix => true,
+            | Os::Aix
+            | Os::Hurd => true,
         }
     }
 
@@ -586,6 +592,12 @@ impl Target {
         self.os == Os::Wasi
     }
 
+    /// Returns true if we're building a binary for GNU/Hurd
+    #[inline]
+    pub fn is_hurd(&self) -> bool {
+        self.os == Os::Hurd
+    }
+
     /// Returns true if the current platform's target env is Musl
     #[inline]
     pub fn is_musl_libc(&self) -> bool {