Update README.md for archiving

Do not build Demangle on Swift 5.9 or above

README.md

@@ -1,3 +1,6 @@
+> [!IMPORTANT]  
+> This library is now archived as backtracing is built into Swift 5.9+
+
 # Backtrace
 
 This Swift package provides support for automatically printing crash backtraces of Swift programs.

Sources/Backtrace/Demangle.swift

@@ -12,6 +12,10 @@
 //
 //===----------------------------------------------------------------------===//
 
+// Swift 5.9 has its own built-in backtracing support in the runtime;
+// we don't want to activate this library if we're using 5.9 or above.
+#if !(swift(>=5.9) && !os(Windows))
+
 #if os(Linux)
 import Glibc
 #elseif os(Windows)
@@ -55,3 +59,5 @@ internal func _stdlib_demangleName(_ mangledName: String) -> String {
     }
 }
 #endif
+
+#endif

Sources/Sample/main.swift

@@ -15,8 +15,10 @@
 import Backtrace
 #if canImport(Darwin)
 import Darwin
-#elseif os(Linux)
+#elseif canImport(Glibc)
 import Glibc
+#elseif canImport(Musl)
+import Musl
 #endif
 
 #if swift(<5.9) || os(Windows)

docker/Dockerfile

@@ -19,8 +19,8 @@ RUN apt-get update && apt-get install -y lsof dnsutils netcat-openbsd net-tools
 # ruby and jazzy for docs generation
 RUN apt-get update && apt-get install -y ruby ruby-dev libsqlite3-dev build-essential
 # jazzy no longer works on older version of ubuntu as ruby is too old.
-RUN if [ "${ubuntu_version}" = "focal" ] ; then echo "gem: --no-document" > ~/.gemrc ; fi
-RUN if [ "${ubuntu_version}" = "focal" ] ; then gem install jazzy ; fi
+RUN if [ "${ubuntu_version}" = "jammy" ] ; then echo "gem: --no-document" > ~/.gemrc ; fi
+RUN if [ "${ubuntu_version}" = "jammy" ] ; then gem install jazzy ; fi
 
 # tools
 RUN mkdir -p $HOME/.tools

docker/docker-compose.2204.510.yaml

@@ -0,0 +1,17 @@
+version: "3"
+
+services:
+
+  runtime-setup:
+    image: swift-linux-backtrace:22.04-5.10
+    build:
+      args:
+        base_image: "swiftlang/swift:nightly-5.10-jammy"
+
+  test:
+    image: swift-linux-backtrace:22.04-5.10
+    environment:
+      - FORCE_TEST_DISCOVERY=--enable-test-discovery
+
+  shell:
+    image: swift-linux-backtrace:22.04-5.10

docker/docker-compose.2204.59.yaml

@@ -6,7 +6,8 @@ services:
     image: swift-linux-backtrace:22.04-5.9
     build:
       args:
-        base_image: "swiftlang/swift:nightly-5.9-jammy"
+        ubuntu_version: "jammy"
+        swift_version: "5.9"
 
   test:
     image: swift-linux-backtrace:22.04-5.9