crgo-rail: feat: added 'exclude' to the features pruning; updated cfg in rail.toml; upgraded the 'msrv' detection, resolution w/ cfg in rail.toml && added strict testing; fixed the 'quiche' issue where target-triples aren't defined in any TOML, but instead are in '.github/workflows' in yaml/yml files - validated against CF's quiche repo. add cargo-args output format

Author: loadingalias

Cargo.lock

@@ -22,7 +22,7 @@ exclude = ["docs/", "tests/", ".github/", ".config/", "examples/"]
 clap = { version = "4.5.53", features = ["derive", "cargo"] }
 cargo_metadata = "0.23.1"
 petgraph = "0.8.3"
-toml_edit = { version = "0.23.7", features = ["serde"] }
+toml_edit = { version = "0.23.9", features = ["serde"] }
 serde = { version = "1.0.228", features = ["derive"] }
 serde_json = "1.0.145"
 semver = "1.0.27"

Cargo.toml

@@ -95,10 +95,11 @@ cargo-rail takes a different approach:
 Graph-aware. Only test what's affected by your changes:
 
 ```bash
-cargo rail affected              # Show affected crates
+cargo rail affected                # Show affected crates
 cargo rail affected -f names-only  # Just names (for scripting)
-cargo rail test                  # Run tests for affected crates only
-cargo rail test --all            # Override: test everything
+cargo rail affected -f cargo-args  # -p crate1 -p crate2 (for cargo commands)
+cargo rail test                    # Run tests for affected crates only
+cargo rail test --all              # Override: test everything
 ```
 
 **For CI:** Use [`cargo-rail-action`](https://github.com/loadingalias/cargo-rail-action):

README.md

@@ -64,6 +64,7 @@ Options:
           - text:          Human-readable text output (default)
           - json:          Machine-readable JSON output
           - names-only:    Names only, one per line
+          - cargo-args:    Cargo -p flag format: -p crate1 -p crate2
           - github:        GitHub Actions output format for $GITHUB_OUTPUT
           - github-matrix: GitHub Actions matrix format for strategy.matrix
           - jsonl:         JSON Lines format (one object per line)
@@ -170,6 +171,7 @@ Options:
           - text:          Human-readable text output (default)
           - json:          Machine-readable JSON output
           - names-only:    Names only, one per line
+          - cargo-args:    Cargo -p flag format: -p crate1 -p crate2
           - github:        GitHub Actions output format for $GITHUB_OUTPUT
           - github-matrix: GitHub Actions matrix format for strategy.matrix
           - jsonl:         JSON Lines format (one object per line)
@@ -382,6 +384,7 @@ Options:
           - text:          Human-readable text output (default)
           - json:          Machine-readable JSON output
           - names-only:    Names only, one per line
+          - cargo-args:    Cargo -p flag format: -p crate1 -p crate2
           - github:        GitHub Actions output format for $GITHUB_OUTPUT
           - github-matrix: GitHub Actions matrix format for strategy.matrix
           - jsonl:         JSON Lines format (one object per line)
@@ -448,6 +451,7 @@ Options:
           - text:          Human-readable text output (default)
           - json:          Machine-readable JSON output
           - names-only:    Names only, one per line
+          - cargo-args:    Cargo -p flag format: -p crate1 -p crate2
           - github:        GitHub Actions output format for $GITHUB_OUTPUT
           - github-matrix: GitHub Actions matrix format for strategy.matrix
           - jsonl:         JSON Lines format (one object per line)
@@ -572,6 +576,7 @@ Options:
           - text:          Human-readable text output (default)
           - json:          Machine-readable JSON output
           - names-only:    Names only, one per line
+          - cargo-args:    Cargo -p flag format: -p crate1 -p crate2
           - github:        GitHub Actions output format for $GITHUB_OUTPUT
           - github-matrix: GitHub Actions matrix format for strategy.matrix
           - jsonl:         JSON Lines format (one object per line)
@@ -618,6 +623,7 @@ Options:
           - text:          Human-readable text output (default)
           - json:          Machine-readable JSON output
           - names-only:    Names only, one per line
+          - cargo-args:    Cargo -p flag format: -p crate1 -p crate2
           - github:        GitHub Actions output format for $GITHUB_OUTPUT
           - github-matrix: GitHub Actions matrix format for strategy.matrix
           - jsonl:         JSON Lines format (one object per line)
@@ -666,6 +672,7 @@ Options:
           - text:          Human-readable text output (default)
           - json:          Machine-readable JSON output
           - names-only:    Names only, one per line
+          - cargo-args:    Cargo -p flag format: -p crate1 -p crate2
           - github:        GitHub Actions output format for $GITHUB_OUTPUT
           - github-matrix: GitHub Actions matrix format for strategy.matrix
           - jsonl:         JSON Lines format (one object per line)
@@ -734,6 +741,7 @@ Options:
           - text:          Human-readable text output (default)
           - json:          Machine-readable JSON output
           - names-only:    Names only, one per line
+          - cargo-args:    Cargo -p flag format: -p crate1 -p crate2
           - github:        GitHub Actions output format for $GITHUB_OUTPUT
           - github-matrix: GitHub Actions matrix format for strategy.matrix
           - jsonl:         JSON Lines format (one object per line)

docs/commands.md

@@ -101,20 +101,24 @@ Controls workspace dependency unification behavior. All options are optional wit
 
 | Option | Type | Default | Description |
 |--------|------|---------|-------------|
-| `msrv` | `bool` | `true` | Compute and write MSRV to `[workspace.package].rust-version`. The MSRV is the maximum `rust-version` from all resolved dependencies - your buildable floor. |
+| `msrv` | `bool` | `true` | Compute and write MSRV to `[workspace.package].rust-version`. The MSRV is determined by `msrv_source`. |
+| `msrv_source` | `enum` | `"max"` | How to compute the final MSRV:<br>• `"deps"` - Use maximum from dependencies only (original behavior)<br>• `"workspace"` - Preserve existing rust-version, warn if deps need higher<br>• `"max"` - Take max(workspace, deps) - your explicit setting wins if higher |
 | `detect_unused` | `bool` | `true` | Detect dependencies declared in manifests but absent from the resolved cargo graph. |
 | `remove_unused` | `bool` | `true` | Automatically remove unused dependencies during unification. Requires `detect_unused = true`. |
 | `prune_dead_features` | `bool` | `true` | Remove features that are never enabled in the resolved dependency graph across all targets. Only prunes empty no-ops (`feature = []`). Features with actual dependencies are preserved. |
+| `preserve_features` | `string[]` | `[]` | Features to preserve from dead feature pruning. Supports glob patterns (e.g., `"unstable-*"`, `"bench*"`). Use this to keep features intended for future use or external consumers. |
 | `max_backups` | `usize` | `3` | Maximum number of backup archives to keep. Older backups are automatically cleaned up after successful operations. Set to `0` to disable backup creation entirely. |
 
 **Example:**
 
 ```toml
 [unify]
 msrv = true
+msrv_source = "max"  # "deps" | "workspace" | "max"
 detect_unused = true
 remove_unused = true
 prune_dead_features = true
+preserve_features = ["future-api", "unstable-*"]  # Keep these from pruning
 max_backups = 5
 ```
 
@@ -182,9 +186,11 @@ transitive_host = "root"
 [unify]
 # Core options (defaults shown)
 msrv = true
+msrv_source = "max"  # "deps" | "workspace" | "max"
 detect_unused = true
 remove_unused = true
 prune_dead_features = true
+preserve_features = []  # Glob patterns to preserve from pruning
 max_backups = 3
 
 # Version handling
@@ -455,9 +461,11 @@ targets = [
 [unify]
 # Core
 msrv = true
+msrv_source = "max"  # "deps" | "workspace" | "max"
 detect_unused = true
 remove_unused = true
 prune_dead_features = true
+preserve_features = []  # Glob patterns: ["unstable-*", "future-api"]
 max_backups = 3
 
 # Version handling

docs/config.md

@@ -22,7 +22,7 @@ pub use cargo_transform::{CargoTransform, TransformContext};
 pub use feature_scanner::{FeatureScanResult, FeatureScanner};
 pub use manifest_analyzer::{DepKey, DepKind, DepUsage, ManifestAnalyzer};
 pub use manifest_writer::ManifestWriter;
-pub use multi_target_metadata::{ComputedMsrv, FragmentedTransitive, MultiTargetMetadata};
+pub use multi_target_metadata::{ComputedMsrv, FragmentedTransitive, MsrvSourceUsed, MultiTargetMetadata};
 pub use unify_analyzer::UnifyAnalyzer;
 pub use unify_report::UnifyReport;
 pub use unify_types::{