From e891683f2eac59c6bec93df88e5b82ef3be16394 Mon Sep 17 00:00:00 2001
From: Sebastien Bourdeauducq <sb@m-labs.hk>
Date: Mon, 24 Jan 2022 16:54:05 +0800
Subject: [PATCH] flake: hack-link libstdc++ statically on Windows. Closes #175

---
 flake.nix | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/flake.nix b/flake.nix
index 14a17c4d0..23b8de188 100644
--- a/flake.nix
+++ b/flake.nix
@@ -160,6 +160,14 @@
             buildInputs = [ pkgs-mingw.zlib ];
             configurePhase =
               ''
+              # Link libstdc++ statically. As usual with cargo, this is an adventure.
+              cp --no-preserve=mode,ownership -R $CARGO_HOME/cargo-vendor-dir/llvm-sys-130.0.1/ llvm-sys-130.0.1
+              substituteInPlace llvm-sys-130.0.1/build.rs --replace "cargo:rustc-link-lib=dylib=" "cargo:rustc-link-lib=static="
+              substituteInPlace llvm-sys-130.0.1/build.rs --replace "fn main() {" "fn main() { println!(\"cargo:rustc-link-search=native=${pkgs-mingw.stdenv.cc.cc}/x86_64-w64-mingw32/lib\");"
+              chmod 755 $CARGO_HOME/cargo-vendor-dir
+              rm $CARGO_HOME/cargo-vendor-dir/llvm-sys-130.0.1
+              mv llvm-sys-130.0.1 $CARGO_HOME/cargo-vendor-dir/llvm-sys-130.0.1
+
               export PYO3_CONFIG_FILE=${pyo3-mingw-config}
 
               mkdir llvm-cfg