ci: enforce Rust 1.88 and quality gates

Author: HaoZeke

.github/workflows/ci_test.yml

@@ -14,6 +14,34 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
+  quality:
+    name: format, clippy, and public metadata
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@stable
+        with:
+          components: rustfmt, clippy
+      - uses: Swatinem/rust-cache@v2
+      - name: Rust formatting
+        run: cargo fmt --all --check
+      - name: Clippy
+        run: cargo clippy --locked --all-targets -- -D warnings
+      - name: Public metadata contract
+        run: cargo test --locked --test public_metadata
+
+  msrv:
+    name: Rust 1.88 minimum
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@master
+        with:
+          toolchain: 1.88.0
+      - uses: Swatinem/rust-cache@v2
+      - name: Locked all-targets check
+        run: cargo check --locked --all-targets
+
   unit:
     name: cargo test --lib
     runs-on: ubuntu-latest

CHANGELOG.md

@@ -40,6 +40,8 @@ All notable changes to this unreleased project are documented here.
   mechanical.
 - Documentation, examples, CI, and acceptance fixtures use only the
   version-one command and MCP names.
+- CI enforces the Rust 1.88 minimum, formatting, clippy with warnings denied,
+  and public metadata contracts.
 
 ### Removed
 

CONTRIBUTING.md

@@ -6,8 +6,8 @@ co-selection, and reviewable reports. Clear, tested, reproducible changes win.
 
 ## Development environment
 
-Rust stable is enough for the library and CLI. Documentation uses
-[pixi](https://pixi.sh):
+Rust 1.88 is the minimum supported toolchain; current stable is used for the
+main test and lint gates. Documentation uses [pixi](https://pixi.sh):
 
 ```bash
 cargo test --locked --lib

Cargo.toml

@@ -2,7 +2,7 @@
 name = "eb_stack"
 version = "0.3.0"
 edition = "2021"
-rust-version = "1.75"
+rust-version = "1.88"
 description = "Turn conda-forge, Spack, and EasyBuild recipes into Resolvo-solved variants, CycloneDX SBOMs, and build-evaluated package bundles"
 license = "MIT"
 authors = ["Rohit Goswami <rgoswami@ieee.org>"]

README.md

@@ -45,6 +45,8 @@ Report these claims independently:
 
 ## Install
 
+Rust 1.88 or newer is required for the locked dependency graph.
+
 ```sh
 git clone https://github.com/HaoZeke/eb-stack.git
 cd eb-stack

docs/orgmode/contributing.org

@@ -7,8 +7,8 @@ repo root; keep them aligned when you change either.
 
 * Development environment
 
-Rust stable builds the library and CLI. Documentation uses
-[[https://pixi.sh][pixi]]:
+Rust 1.88 is the minimum supported toolchain; current stable runs the main test
+and lint gates. Documentation uses [[https://pixi.sh][pixi]]:
 
 #+begin_src bash
 cargo test --locked --lib