musllinux wheels use new libunwind

Author: pablogsal

pyproject.toml

@@ -167,5 +167,14 @@ before-all = [
   "apk add libintl",
 
   # Install Memray's other build and test dependencies
-  "apk add --update libunwind-dev lz4-dev"
+  "apk add --update lz4-dev",
+
+  # Build libunwind from source
+  "cd /",
+  "LIBUNWIND_VERS=1.8.3",
+  "curl -LO https://github.com/libunwind/libunwind/releases/download/v$LIBUNWIND_VERS/libunwind-$LIBUNWIND_VERS.tar.gz",
+  "tar xf libunwind-$LIBUNWIND_VERS.tar.gz",
+  "cd libunwind-$LIBUNWIND_VERS",
+  "./configure --disable-minidebuginfo",
+  "make install",
 ]