Test by upgrading bsdiff

B/bsdiff/build_tarballs.jl

@@ -7,8 +7,7 @@ version = v"4.3.0"
 
 # Collection of sources required to complete build
 sources = [
-    "https://github.com/mendsley/bsdiff/archive/64ad986cb7bfa8b9145a2d48cd95986660b35d53.tar.gz" =>
-    "1181466689aa224f4a2dd2376820588c67d20f4f0d50055339fcb171fb877a29",
+    FileSource("https://github.com/mendsley/bsdiff/archive/64ad986cb7bfa8b9145a2d48cd95986660b35d53.tar.gz", "1181466689aa224f4a2dd2376820588c67d20f4f0d50055339fcb171fb877a29"),
 ]
 
 # Bash recipe for building across all platforms
@@ -22,22 +21,9 @@ make
 make install
 """
 
-# These are the platforms we will build for by default, unless further
-# platforms are passed in on the command line
-platforms = [
-    Linux(:i686, libc=:glibc),
-    Linux(:x86_64, libc=:glibc),
-    Linux(:aarch64, libc=:glibc),
-    Linux(:armv7l, libc=:glibc, call_abi=:eabihf),
-    Linux(:powerpc64le, libc=:glibc),
-    Linux(:i686, libc=:musl),
-    Linux(:x86_64, libc=:musl),
-    Linux(:aarch64, libc=:musl),
-    Linux(:armv7l, libc=:musl, call_abi=:eabihf),
-    MacOS(:x86_64),
-    FreeBSD(:x86_64)
-]
-
+# Disable Windows for now, as there are many BSD-isms in the source code
+# that we don't want to bother to patch out.  Things like err.h and whatnot.
+platforms = filter(p -> !isa(p, Windows), supported_platforms())
 
 # The products that we will ensure are always built
 products = [
@@ -47,7 +33,7 @@ products = [
 
 # Dependencies that must be installed before this package can be built
 dependencies = [
-    PackageSpec(name="Bzip2_jll", uuid="6e34b625-4abd-537c-b88f-471c36dfa7a0")
+    Dependency(PackageSpec(name="Bzip2_jll", uuid="6e34b625-4abd-537c-b88f-471c36dfa7a0")),
 ]
 
 # Build the tarballs, and possibly a `build.jl` as well.