Fix wording: "C Header" -> "Rust bindings"

[danielocfb]

The crate does not generate a C header but Rust bindings, but wording and error messages talk about the former, which can cause confusion. Fix the wording.

[danielocfb]

Seems as if Ubuntu broke the riscv job.

[polarathene]

Seems as if Ubuntu broke the riscv job.

It works fine on a standard Ubuntu container with equivalent commands run:

docker run --rm -it ubuntu:22.04
dpkg --add-architecture riscv64

export release=$(. /etc/os-release && echo "$UBUNTU_CODENAME")
sed -i 's/^deb /deb [arch=amd64] /' /etc/apt/sources.list
printf 'deb [arch=riscv64] http://ports.ubuntu.com/ %s main restricted\n' "${release}" "${release}-updates" "${release}-security" >> /etc/apt/sources.list

apt-get -qq update && apt-get install -y build-essential autopoint gettext libelf-dev:riscv64 zlib1g-dev:riscv64

The CI output shows that it's using different repo mirrors for packages tied to Azure/Microsoft?

• http://azure.archive.ubuntu.com/ubuntu
• https://packages.microsoft.com/repos/azure-cli
• https://packages.microsoft.com/ubuntu/22.04/prod

Notably they seem to have a MS specific mirror logged with both amd64 + arm64 archs logged as supported? Perhaps that's a change that's messing with the resolver, which seems to happen for repo URIs that aren't constrained as intended? 🤔

Get:21 https://packages.microsoft.com/ubuntu/22.04/prod jammy/main amd64 Packages [226 kB]
Get:22 https://packages.microsoft.com/ubuntu/22.04/prod jammy/main armhf Packages [19.8 kB]
Get:23 https://packages.microsoft.com/ubuntu/22.04/prod jammy/main arm64 Packages [66.2 kB]

I did try with the GH runner sources modification to use mirrors, but it seems to install the packages fine too:

$ touch /etc/apt/apt-mirrors.txt
$ printf "http://azure.archive.ubuntu.com/ubuntu/\tpriority:1\n" | tee -a /etc/apt/apt-mirrors.txt
$ printf "https://archive.ubuntu.com/ubuntu/\tpriority:2\n" | tee -a /etc/apt/apt-mirrors.txt
$ printf "https://security.ubuntu.com/ubuntu/\tpriority:3\n" | tee -a /etc/apt/apt-mirrors.txt
$ sed -i 's|http://archive\.ubuntu\.com/ubuntu/|mirror+file:/etc/apt/apt-mirrors.txt|' /etc/apt/sources.list

$ cat /etc/apt/apt-mirrors.txt
http://azure.archive.ubuntu.com/ubuntu/ priority:1
https://archive.ubuntu.com/ubuntu/      priority:2
https://security.ubuntu.com/ubuntu/     priority:3

$ cat /etc/apt/sources.list
# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb [arch=amd64] mirror+file:/etc/apt/apt-mirrors.txt jammy main restricted
# deb-src mirror+file:/etc/apt/apt-mirrors.txt jammy main restricted

## Major bug fix updates produced after the final release of the
## distribution.
deb [arch=amd64] mirror+file:/etc/apt/apt-mirrors.txt jammy-updates main restricted
# deb-src mirror+file:/etc/apt/apt-mirrors.txt jammy-updates main restricted

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
deb [arch=amd64] mirror+file:/etc/apt/apt-mirrors.txt jammy universe
# deb-src mirror+file:/etc/apt/apt-mirrors.txt jammy universe
deb [arch=amd64] mirror+file:/etc/apt/apt-mirrors.txt jammy-updates universe
# deb-src mirror+file:/etc/apt/apt-mirrors.txt jammy-updates universe

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb [arch=amd64] mirror+file:/etc/apt/apt-mirrors.txt jammy multiverse
# deb-src mirror+file:/etc/apt/apt-mirrors.txt jammy multiverse
deb [arch=amd64] mirror+file:/etc/apt/apt-mirrors.txt jammy-updates multiverse
# deb-src mirror+file:/etc/apt/apt-mirrors.txt jammy-updates multiverse

## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
deb [arch=amd64] mirror+file:/etc/apt/apt-mirrors.txt jammy-backports main restricted universe multiverse
# deb-src mirror+file:/etc/apt/apt-mirrors.txt jammy-backports main restricted universe multiverse

deb [arch=amd64] http://security.ubuntu.com/ubuntu/ jammy-security main restricted
# deb-src http://security.ubuntu.com/ubuntu/ jammy-security main restricted
deb [arch=amd64] http://security.ubuntu.com/ubuntu/ jammy-security universe
# deb-src http://security.ubuntu.com/ubuntu/ jammy-security universe
deb [arch=amd64] http://security.ubuntu.com/ubuntu/ jammy-security multiverse
# deb-src http://security.ubuntu.com/ubuntu/ jammy-security multiverse
deb [arch=riscv64] http://ports.ubuntu.com/ jammy main restricted
deb [arch=riscv64] http://ports.ubuntu.com/ jammy-updates main restricted
deb [arch=riscv64] http://ports.ubuntu.com/ jammy-security main restricted

So unclear where the issue is on the runner instance (I haven't tried running the equivalent).

---

FWIW, maybe consider upgrading to Ubuntu 24.04? Instead of the /etc/apt/sources.list updates, you'd cover both foreign archs (arm64 + riscv64) by appending to /etc/apt/sources.list.d/ubuntu.sources:

Types: deb
URIs: http://ports.ubuntu.com/ubuntu-ports/
Suites: noble noble-updates noble-backports noble-security
Components: main universe restricted multiverse
Signed-By: /usr/share/keyrings/ubuntu-archive-keyring.gpg
Architectures: arm64 riscv64

This also requires an Architectures: amd64 constraint on the existing entries to avoid resolver errors for the other foreign archs added via dpkg, so the file will look like:

# Default arch support: (amd64 + i386)
# https://www.archive.ubuntu.com/ubuntu/dists/noble/main/
Types: deb
URIs: http://archive.ubuntu.com/ubuntu/
Suites: noble noble-updates noble-backports
Components: main universe restricted multiverse
Signed-By: /usr/share/keyrings/ubuntu-archive-keyring.gpg
Architectures: amd64

## Ubuntu security updates. Aside from URIs and Suites,
## this should mirror your choices in the previous section.
Types: deb
URIs: http://security.ubuntu.com/ubuntu/
Suites: noble-security
Components: main universe restricted multiverse
Signed-By: /usr/share/keyrings/ubuntu-archive-keyring.gpg
Architectures: amd64

# Additional arch support: (arm64 + armhf + ppc64el + riscv64 + s390x)
# https://ports.ubuntu.com/ubuntu-ports/dists/noble/main/
Types: deb
URIs: http://ports.ubuntu.com/ubuntu-ports/
Suites: noble noble-updates noble-backports noble-security
Components: main universe restricted multiverse
Signed-By: /usr/share/keyrings/ubuntu-archive-keyring.gpg
Architectures: arm64 riscv64

So I assume the runner config differs from the above. Might be nicer to inspect via the Ubuntu 24.04 runner which uses the newer sources config approach (old one is deprecated/discouraged).

[danielocfb]

They screw up regularly and break various things packaging. It's a lost cause. But fixed now...