Match 'domain's MSRV at 1.85 #7

Workflow file for this run

	# ======================================================
	# Continuous Integration: making sure the codebase works
	# ======================================================
	#
	# This workflow tests modifications to 'domain-kmip', ensuring that
	# 'domain-kmip' can be used by others successfully. It verifies certain aspects
	# of the codebase, such as the formatting and feature flag combinations, and
	# runs the full test suite. It runs on Ubuntu, Mac OS, and Windows.

	name: CI

	# When the workflow runs
	# ---------------------
	on:
	# Execute when a pull request is (re-) opened or its head changes (e.g. new
	# commits are added or the commit history is rewritten) ... but only if
	# build-related files change.
	pull_request:
	paths:
	- '**.rs'
	- 'Cargo.toml'
	- 'Cargo.lock'
	- '.github/workflows/ci.yml'

	# If a pull request is merged, at least one commit is added to the target
	# branch. If the target is another pull request, it will be caught by the
	# above event. We miss PRs that merge to a non-PR branch, except for the
	# 'main' branch.

	# Execute when a commit is pushed to 'main' (including merged PRs) or to a
	# release tag ... but only if build-related files change.
	push:
	branches:
	- 'main'
	- 'releases/**'
	paths:
	- '**.rs'
	- 'Cargo.toml'
	- 'Cargo.lock'
	- '.github/workflows/ci.yml'

	# Rebuild 'main' every week. This will account for changes to dependencies
	# and to Rust, either of which can trigger new failures. Rust releases are
	# every 6 weeks, on a Thursday; this event runs every Friday.
	schedule:
	- cron: '0 10 * * FRI'

	# Jobs
	# ----------------------------------------------------------------------------
	jobs:

	# Check Formatting
	# ----------------
	#
	# NOTE: This job is run even if no '.rs' files have changed. Inserting such
	# a check would require using a separate workflow file or using third-party
	# actions. Most commits do change '.rs' files, and 'cargo-fmt' is pretty
	# fast, so optimizing this is not necessary.
	check-fmt:
	name: Check formatting
	runs-on: ubuntu-latest
	steps:

	# Load the repository.
	- name: Checkout repository
	uses: actions/checkout@v4

	# Set up the Rust toolchain.
	- name: Set up Rust
	uses: actions-rust-lang/setup-rust-toolchain@v1
	with:
	toolchain: stable
	components: rustfmt
	cache: false

	# Do the actual formatting check.
	- name: Check formatting
	run: cargo fmt --all -- --check

	# Determine MSRV
	# --------------
	#
	# The MSRV needs to be determined as we will test 'domain-kmip' against the
	# Rust compiler at that version.
	determine-msrv:
	name: Determine MSRV
	runs-on: ubuntu-latest
	outputs:
	msrv: ${{ steps.determine-msrv.outputs.msrv }}
	steps:

	# Load the repository.
	- name: Checkout repository
	uses: actions/checkout@v4

	# Determine the MSRV.
	- name: Determine MSRV
	id: determine-msrv
	run: \|
	msrv=`cargo metadata --no-deps --format-version 1 \| jq -r '.packages[]\|select(.name=="domain-kmip")\|.rust_version'`
	echo "msrv=$msrv" >> "$GITHUB_OUTPUT"

	# Check Feature Flags
	# -------------------
	#
	# Rust does not provide any way to check that all possible feature flag
	# combinations will succeed, so we need to try them manually here. We will
	# assume this choice is not influenced by the OS or Rust version.
	check-feature-flags:
	name: Check feature flags
	runs-on: ubuntu-latest
	steps:

	# Load the repository.
	- name: Checkout repository
	uses: actions/checkout@v4

	# Set up the Rust toolchain.
	- name: Set up Rust
	id: setup-rust
	uses: actions-rust-lang/setup-rust-toolchain@v1
	with:
	toolchain: stable
	cache: false

	# Do the actual feature flag checks.
	- name: Check empty feature set
	run: cargo check --all-targets --no-default-features

	# Check the required feature flags for every example.
	- name: Check required features of examples
	run: \|
	# Scrape crate metadata and construct the right 'check' commands.
	# Cargo deosn't have an option to select the right features for us.
	# See: https://github.com/rust-lang/cargo/issues/4663
	cargo metadata --no-deps --format-version 1 \
	\| jq -r '.packages[].targets[]\|select(.kind\|any(.=="example"))\|{name,features:(.["required-features"]\|join(","))}\|"\(.name) \(.features)"' \
	\| while read -r name features; do
	cargo check --example=$name --no-default-features --features=$features
	done

	# Check Minimal Versions
	# ----------------------
	#
	# Ensure that 'domain-kmip' compiles with the oldest compatible versions of all
	# packages, even those 'domain-kmip' depends upon indirectly.
	check-minimal-versions:
	name: Check minimal versions
	runs-on: ubuntu-latest
	env:
	RUSTFLAGS: "-D warnings"
	steps:

	# Load the repository.
	- name: Checkout repository
	uses: actions/checkout@v4

	# Set up the Rust toolchain.
	- name: Set up Rust nightly
	id: setup-rust
	uses: actions-rust-lang/setup-rust-toolchain@v1
	with:
	toolchain: nightly
	cache: false

	# Lock all dependencies to their minimal versions.
	- name: Lock dependencies to minimal versions
	run: cargo +nightly update -Z minimal-versions

	# Check that 'domain-kmip' compiles.
	- name: Check
	run: cargo check --all-targets --all-features --locked

	# Clippy
	# ------
	#
	# We run Clippy separately, and only on nightly Rust because it offers a
	# superset of the lints.
	#
	# 'cargo clippy' and 'cargo build' can share some state for fast execution,
	# but it's faster to execute them in parallel than to establish an ordering
	# between them.
	clippy:
	name: Clippy
	runs-on: ubuntu-latest
	env:
	RUSTFLAGS: "-D warnings"
	steps:

	# Load the repository.
	- name: Checkout repository
	uses: actions/checkout@v4

	# Set up the Rust toolchain.
	- name: Set up Rust nightly
	id: setup-rust
	uses: actions-rust-lang/setup-rust-toolchain@v1
	with:
	toolchain: nightly
	components: clippy
	cache: false

	# Do the actually Clippy run.
	- name: Check Clippy
	run: cargo +nightly clippy --all-targets --all-features

	# Test
	# ----
	#
	# Ensure that 'domain-kmip' compiles and its test suite passes, on a large
	# number of operating systems and Rust versions.
	test:
	name: Test
	needs: determine-msrv
	strategy:
	matrix:
	os: [ubuntu-latest, macOS-latest, windows-latest]
	rust: ["${{ needs.determine-msrv.outputs.msrv }}", stable, nightly]
	runs-on: ${{ matrix.os }}
	env:
	RUSTFLAGS: "-D warnings"
	steps:

	# Load the repository.
	- name: Checkout repository
	uses: actions/checkout@v4

	# Prepare the environment on Windows
	- name: Prepare Windows environment
	if: matrix.os == 'windows-latest'
	shell: bash
	run: \|
	# See <https://github.com/actions/runner-images/issues/12432>
	echo "CARGO_TARGET_X86_64_PC_WINDOWS_MSVC_LINKER=rust-lld" >> "$GITHUB_ENV"

	# Set up the Rust toolchain.
	- name: Set up Rust ${{ matrix.rust }}
	id: setup-rust
	uses: actions-rust-lang/setup-rust-toolchain@v1
	with:
	toolchain: ${{ matrix.rust }}
	cache: false

	# Build and run the test suite.
	- name: Test
	run: cargo test --all-targets --all-features

	# TODO: Use 'cargo-semver-checks' on releases.

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Match 'domain's MSRV at 1.85 #7

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Match 'domain's MSRV at 1.85 #7

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