lib32-rust: update to 1.36.0

lib32-rust/PKGBUILD

 _pkgbasename=rust
 pkgname=lib32-$_pkgbasename
-pkgver=1.35.0
+pkgver=1.36.0
 pkgrel=1
 pkgdesc='32-bit libraries for rust'
 url='https://www.rust-lang.org/'
 arch=('x86_64')
 license=('MIT' 'Apache')
-makedepends=('llvm' 'libffi' 'perl' 'python2' 'curl' 'cmake')
+makedepends=('llvm' 'libffi' 'perl' 'python3' 'curl' 'cmake')
 depends=('lib32-gcc-libs' "$_pkgbasename=$pkgver")
 source=("https://static.rust-lang.org/dist/rustc-$pkgver-src.tar.gz"{,.asc}
-        config.toml)
-sha256sums=('5a4d637a716bac18d085f44dd87ef48b32195f71b967d872d80280b38cff712d'
+        config.toml
+        librustc-llvm-libffi.patch)
+sha256sums=('04c4e4d7213d036d6aaed392841496d272146312c0290f728b7400fccd15bb1b'
             'SKIP'
-            '36c22ecdacbfeca9ab955726b4a701f687f8ed358a1b8ab2d7cc988408db44cb')
+            'a4a4f8af81b92e70f308c55e19f29103ecd63b90577b067fd33530604f99c873'
+            '49fa39e8775c9e3b3400d35d2df0728975371f9832d2d76d0dadf9fc73199774')
 validpgpkeys=('108F66205EAEB0AAA8DD5E1C85AB96E6FA1BE5FE') # Rust Language (Tag and Release Signing Key) <rust-key@rust-lang.org>
 
 prepare() {
   cd "rustc-$pkgver-src"
-
   cp "$srcdir"/config.toml config.toml
+  patch -Np0 -i $srcdir/librustc-llvm-libffi.patch
 }
 
 build() {
   cd "rustc-$pkgver-src"
-
-  msg2 "Run build under x.py"
-  python2 ./x.py build
+  python3 ./x.py build
 }
 
 package() {

lib32-rust/config.toml

@@ -5,7 +5,7 @@ link-shared = true
 target = ["i686-unknown-linux-gnu"] # defaults to just the build triple
 cargo = "/usr/bin/cargo"
 rustc = "/usr/bin/rustc"
-python = "python2.7"
+python = "python3"
 extended = true
 sanitizers = false
 local-rebuild = true

lib32-rust/librustc-llvm-libffi.patch

+--- src/librustc_llvm/lib.rs    2019-07-03 10:00:00.000000000 +0200
++++ src/librustc_llvm/lib.rs.new        2019-07-27 14:12:19.790910082 +0200
+@@ -4,6 +4,7 @@
+
+ #![doc(html_root_url = "https://doc.rust-lang.org/nightly/")]
+
++#[link(name = "ffi")] extern {}
+ // See librustc_cratesio_shim/Cargo.toml for a comment explaining this.
+ #[allow(unused_extern_crates)]
+ extern crate rustc_cratesio_shim;