[git] - Fixing installation from source with new version 2.55.0

[Kaniska244]

Summary

Starting with Git 2.55.0, the upstream build system enables Rust by default. As a result, the git feature's "from source" build (src/git/install.sh) now fails when it tries to compile the latest Git on images that don't ship a Rust toolchain.

This PR fixes installation from source by explicitly opting out of Rust during the build (NO_RUST=YesPlease), restoring successful builds for latest/current/lts and any pinned >= 2.55.0 version across all supported distros.
Reference: What's new in Git 2.55.0? — Evolution of Rust in the Git codebase

Problem

The git feature builds Git from source for non-OS-provided versions. Because this feature auto-detects and installs the latest stable Git, it began picking up 2.55.0, and the build now fails on images without a Rust toolchain — which is the case for the dependency sets installed in install.sh (Debian/Ubuntu, Alpine, and RHEL/Fedora/Mariner). None of these install Rust, so the default Rust-enabled build cannot complete.

Changes

• src/git/install.sh — Add NO_RUST=YesPlease to the git_options passed to make, so the source build keeps working without requiring a Rust toolchain:

  git_options=("prefix=/usr/local")
  git_options+=("sysconfdir=/etc")
  git_options+=("USE_LIBPCRE=YesPlease")
  git_options+=("NO_RUST=YesPlease")

• src/git/devcontainer-feature.json — Bump the feature version 1.3.5 → 1.3.6.

Why opt out instead of installing Rust?

Adding a full Rust toolchain to every build would significantly increase image build time and footprint across all supported distros, for a feature whose purpose is simply to provide an up-to-date Git binary. Opting out via NO_RUST keeps builds fast and lean while remaining fully supported by upstream for the 2.x series. This mirrors how several distro package recipes are handling the transition.

Follow-up / future work

NO_RUST is a temporary opt-out and is slated for removal in Git 3.0. Before Git 3.0 lands, this feature will need a follow-up to provision a Rust toolchain (or otherwise satisfy the Rust build requirement) so source builds continue to succeed. Tracking this as a known future task.

Testing

• Build the latest Git (>= 2.55.0) from source on Debian/Ubuntu
• Build on Alpine
• Build on RHEL/Fedora/Mariner
• Verify git version reports the expected >= 2.55.0 version after install