Packaging for openSUSE

A quick cross check against https://build.opensuse.org/project/show/devel:languages:rust:crates/

(the following is out of date since 0.5dev)

python3-sys:
- [x] libc = "0.2"
- [x] regex = "1" (build dep)

rust-cpython:

- [x] libc = "0.2"
- [x] num-traits = "0.2"

pyembed:

- [x] byteorder = "1"
- [ ] jemalloc-sys = { version = "0.3", optional = true }
- [x] libc = "0.2"
- [ ] python3-sys = { path = "../third_party/rust-cpython/python3-sys" }
- [x] uuid = { version = "0.7", features = ["v4"] }
- [ ] pyoxidizer = { path = "../pyoxidizer" } (build dep)
- [ ] slog = "2.4" (build dep)

pyoxidizer:

- [x] byteorder = "1.2"
- [ ] cargo_toml = "0.6"
- [x] cc = "1.0"
- [ ] clap = "2.32"
- [x] encoding_rs = "0.8"
- [ ] git2 = "0.9"
- [x] glob = "0.3"
- [ ] goblin = "0.0"
- [x] handlebars = "1.1"
- [ ] hex = "0.3"
- [x] itertools = "0.8"
- [x] lazy_static = "1.3"
- [x] libc = "0.2"
- [x] regex = "1"
- [ ] reqwest = "0.9"
- [x] rustc_version = "0.2"
- [x] [semver](https://build.opensuse.org/package/show/devel:languages:rust:crates/rust-semver) = "0.9"
- [x] [serde](https://build.opensuse.org/package/show/devel:languages:rust:crates/rust-serde) = { version = "1.0", features = ["derive"] }
- [ ] serde_cbor = "0.9"
- [x] serde_json = "1.0"
- [ ] sha2 = "0.8"
- [ ] slog = "2.4"
- [ ] tar = "0.4"
- [ ] tempdir = "0.3"
- [x] toml = "0.5"
- [x] url = "1.7"
- [x] uuid = { version = "0.7", features = ["v5"] }
- [ ] version-compare = "0.0"
- [x] walkdir = "2"
- [x] xml-rs = "0.8"
- [ ] zip = "0.5"
- [ ] zstd = "0.4"

pyapp:

- [ ] jemallocator-global = "0.3"
- [x] lazy_static = "1.3"
- [ ] pyembed = { path = "../pyembed" }

The whole group appears to be failing to build atm. Looks like a macro problem.

Have I missed some deps?

It doesnt look too difficult.

I guess I can maybe remove the jemalloc depends by using the slower alloc-ers. Not sure if those have a large dep tree.

Any other hints on how to reduce the number of deps would be greatly appreciated.

Start by reviewing the openSUSE crate package list and reproducing the reported build failure, especially the suspected macro problem. Compare the unchecked dependencies across python3-sys, rust-cpython, pyembed, pyoxidizer, and pyapp with the linked openSUSE project. Done means the package group builds successfully with its required dependencies identified.

Written by the indexing model from the issue text.