Struct Workspace

pub struct Workspace<'gctx> {

    gctx: &'gctx GlobalContext,
    current_manifest: PathBuf,
    packages: Packages<'gctx>,
    root_manifest: Option<PathBuf>,
    target_dir: Option<Filesystem>,
    members: Vec<PathBuf>,
    member_ids: HashSet<PackageId>,
    default_members: Vec<PathBuf>,
    is_ephemeral: bool,
    require_optional_deps: bool,
    loaded_packages: RefCell<HashMap<PathBuf, Package>>,
    ignore_lock: bool,
    requested_lockfile_path: Option<PathBuf>,
    resolve_behavior: ResolveBehavior,
    resolve_honors_rust_version: bool,
    custom_metadata: Option<Value>,
    local_overlays: HashMap<SourceId, PathBuf>,
}

The core abstraction in Cargo for working with a workspace of crates.

A workspace is often created very early on and then threaded through all other functions. It’s typically through this object that the current package is loaded and/or learned about.

Fields

gctx: &'gctx GlobalContext

Cargo configuration information. See GlobalContext.

current_manifest: PathBuf

This path is a path to where the current cargo subcommand was invoked from. That is the --manifest-path argument to Cargo, and points to the “main crate” that we’re going to worry about.

packages: Packages<'gctx>

A list of packages found in this workspace. Always includes at least the package mentioned by current_manifest.

root_manifest: Option<PathBuf>

If this workspace includes more than one crate, this points to the root of the workspace. This is None in the case that [workspace] is missing, package.workspace is missing, and no Cargo.toml above current_manifest was found on the filesystem with [workspace].

target_dir: Option<Filesystem>

Shared target directory for all the packages of this workspace. None if the default path of root/target should be used.

members: Vec<PathBuf>

List of members in this workspace with a listing of all their manifest paths. The packages themselves can be looked up through the packages set above.

member_ids: HashSet<PackageId>

Set of ids of workspace members

default_members: Vec<PathBuf>

The subset of members that are used by the build, check, test, and bench subcommands when no package is selected with --package / -p and --workspace is not used.

This is set by the default-members config in the [workspace] section. When unset, this is the same as members for virtual workspaces (--workspace is implied) or only the root package for non-virtual workspaces.

is_ephemeral: bool

true if this is a temporary workspace created for the purposes of the cargo install or cargo package commands.

require_optional_deps: bool

true if this workspace should enforce optional dependencies even when not needed; false if this workspace should only enforce dependencies needed by the current configuration (such as in cargo install). In some cases false also results in the non-enforcement of dev-dependencies.

loaded_packages: RefCell<HashMap<PathBuf, Package>>

A cache of loaded packages for particular paths which is disjoint from packages up above, used in the load method down below.

ignore_lock: bool

If true, then the resolver will ignore any existing Cargo.lock file. This is set for cargo install without --locked.

requested_lockfile_path: Option<PathBuf>

Requested path of the lockfile (i.e. passed as the cli flag)

resolve_behavior: ResolveBehavior

The resolver behavior specified with the resolver field.

resolve_honors_rust_version: bool

If true, then workspace rust_version would be used in cargo resolve and other places that use rust version. This is set based on the resolver version, config settings, and CLI flags.

custom_metadata: Option<Value>

Workspace-level custom metadata

local_overlays: HashMap<SourceId, PathBuf>

Local overlay configuration. See crate::sources::overlay.

Implementations

impl<'gctx> Workspace<'gctx>

pub fn new( manifest_path: &Path, gctx: &'gctx GlobalContext, ) -> CargoResult<Workspace<'gctx>>

Creates a new workspace given the target manifest pointed to by manifest_path.

This function will construct the entire workspace by determining the root and all member packages. It will then validate the workspace before returning it, so Ok is only returned for valid workspaces.

fn new_default( current_manifest: PathBuf, gctx: &'gctx GlobalContext, ) -> Workspace<'gctx>

pub fn ephemeral( package: Package, gctx: &'gctx GlobalContext, target_dir: Option<Filesystem>, require_optional_deps: bool, ) -> CargoResult<Workspace<'gctx>>

Creates a “temporary workspace” from one package which only contains that package.

This constructor will not touch the filesystem and only creates an in-memory workspace. That is, all configuration is ignored, it’s just intended for that one package.

This is currently only used in niche situations like cargo install or cargo package.

fn set_resolve_behavior(&mut self) -> CargoResult<()>

pub fn current(&self) -> CargoResult<&Package>

Returns the current package of this workspace.

Note that this can return an error if it the current manifest is actually a “virtual Cargo.toml”, in which case an error is returned indicating that something else should be passed.

pub fn current_mut(&mut self) -> CargoResult<&mut Package>

pub fn current_opt(&self) -> Option<&Package>

pub fn current_opt_mut(&mut self) -> Option<&mut Package>

pub fn is_virtual(&self) -> bool

pub fn gctx(&self) -> &'gctx GlobalContext

Returns the GlobalContext this workspace is associated with.

pub fn profiles(&self) -> Option<&TomlProfiles>

pub fn root(&self) -> &Path

Returns the root path of this workspace.

That is, this returns the path of the directory containing the Cargo.toml which is the root of this workspace.

pub fn root_manifest(&self) -> &Path

Returns the path of the Cargo.toml which is the root of this workspace.

pub fn root_maybe(&self) -> &MaybePackage

Returns the root Package or VirtualManifest.

pub fn target_dir(&self) -> Filesystem

fn default_target_dir(&self) -> Filesystem

pub fn root_replace(&self) -> &[(PackageIdSpec, Dependency)]

Returns the root [replace] section of this workspace.

This may be from a virtual crate or an actual crate.

fn config_patch(&self) -> CargoResult<HashMap<Url, Vec<Dependency>>>

pub fn root_patch(&self) -> CargoResult<HashMap<Url, Vec<Dependency>>>

Returns the root [patch] section of this workspace.

This may be from a virtual crate or an actual crate.

pub fn members(&self) -> impl Iterator<Item = &Package>

Returns an iterator over all packages in this workspace

pub fn members_mut(&mut self) -> impl Iterator<Item = &mut Package>

Returns a mutable iterator over all packages in this workspace

pub fn default_members<'a>(&'a self) -> impl Iterator<Item = &'a Package>

Returns an iterator over default packages in this workspace

pub fn default_members_mut(&mut self) -> impl Iterator<Item = &mut Package>

Returns an iterator over default packages in this workspace

pub fn is_member(&self, pkg: &Package) -> bool

Returns true if the package is a member of the workspace.

pub fn is_ephemeral(&self) -> bool

pub fn require_optional_deps(&self) -> bool

pub fn set_require_optional_deps( &mut self, require_optional_deps: bool, ) -> &mut Workspace<'gctx>

pub fn ignore_lock(&self) -> bool

pub fn set_ignore_lock(&mut self, ignore_lock: bool) -> &mut Workspace<'gctx>

pub fn lock_root(&self) -> Filesystem

Returns the directory where the lockfile is in.

fn default_lock_root(&self) -> Filesystem

pub fn set_requested_lockfile_path(&mut self, path: Option<PathBuf>)

pub fn requested_lockfile_path(&self) -> Option<&Path>

pub fn lowest_rust_version(&self) -> Option<&RustVersion>

Get the lowest-common denominator package.rust-version within the workspace, if specified anywhere

pub fn set_resolve_honors_rust_version( &mut self, honor_rust_version: Option<bool>, )

pub fn resolve_honors_rust_version(&self) -> bool

pub fn custom_metadata(&self) -> Option<&Value>

pub fn load_workspace_config( &mut self, ) -> CargoResult<Option<WorkspaceRootConfig>>

fn find_root(&mut self, manifest_path: &Path) -> CargoResult<Option<PathBuf>>

Finds the root of a workspace for the crate whose manifest is located at manifest_path.

This will parse the Cargo.toml at manifest_path and then interpret the workspace configuration, optionally walking up the filesystem looking for other workspace roots.

Returns an error if manifest_path isn’t actually a valid manifest or if some other transient error happens.

fn find_members(&mut self) -> CargoResult<()>

After the root of a workspace has been located, probes for all members of a workspace.

If the workspace.members configuration is present, then this just verifies that those are all valid packages to point to. Otherwise, this will transitively follow all path dependencies looking for members of the workspace.

fn find_path_deps( &mut self, manifest_path: &Path, root_manifest: &Path, is_path_dep: bool, ) -> CargoResult<()>

pub fn unstable_features(&self) -> &Features

Returns the unstable nightly-only features enabled via cargo-features in the manifest.

pub fn resolve_behavior(&self) -> ResolveBehavior

pub fn allows_new_cli_feature_behavior(&self) -> bool

Returns true if this workspace uses the new CLI features behavior.

The old behavior only allowed choosing the features from the package in the current directory, regardless of which packages were chosen with the -p flags. The new behavior allows selecting features from the packages chosen on the command line (with -p or –workspace flags), ignoring whatever is in the current directory.

fn validate(&mut self) -> CargoResult<()>

Validates a workspace, ensuring that a number of invariants are upheld:

1. A workspace only has one root.
2. All workspace members agree on this one root as the root.
3. The current crate is a member of this workspace.

fn validate_unique_names(&self) -> CargoResult<()>

fn validate_workspace_roots(&self) -> CargoResult<()>

fn validate_members(&mut self) -> CargoResult<()>

fn error_if_manifest_not_in_members(&mut self) -> CargoResult<()>

fn validate_manifest(&mut self) -> CargoResult<()>

pub fn load(&self, manifest_path: &Path) -> CargoResult<Package>

pub fn preload(&self, registry: &mut PackageRegistry<'gctx>)

Preload the provided registry with already loaded packages.

A workspace may load packages during construction/parsing/early phases for various operations, and this preload step avoids doubly-loading and parsing crates on the filesystem by inserting them all into the registry with their in-memory formats.

pub fn emit_warnings(&self) -> CargoResult<()>

pub fn emit_lints(&self, pkg: &Package, path: &Path) -> CargoResult<()>

pub fn set_target_dir(&mut self, target_dir: Filesystem)

pub fn members_with_features( &self, specs: &[PackageIdSpec], cli_features: &CliFeatures, ) -> CargoResult<Vec<(&Package, CliFeatures)>>

Returns a Vec of (&Package, RequestedFeatures) tuples that represent the workspace members that were requested on the command-line.

specs may be empty, which indicates it should return all workspace members. In this case, requested_features.all_features must be true. This is used for generating Cargo.lock, which must include all members with all features enabled.

fn collect_matching_features( member: &Package, cli_features: &CliFeatures, found_features: &mut BTreeSet<FeatureValue>, ) -> CliFeatures

Returns the requested features for the given member. This filters out any named features that the member does not have.

fn missing_feature_spelling_suggestions( &self, selected_members: &[&Package], cli_features: &CliFeatures, found_features: &BTreeSet<FeatureValue>, ) -> Vec<String>

fn report_unknown_features_error( &self, specs: &[PackageIdSpec], cli_features: &CliFeatures, found_features: &BTreeSet<FeatureValue>, ) -> CargoResult<()>

fn members_with_features_new( &self, specs: &[PackageIdSpec], cli_features: &CliFeatures, ) -> CargoResult<Vec<(&Package, CliFeatures)>>

New command-line feature selection behavior with resolver = “2” or the root of a virtual workspace. See allows_new_cli_feature_behavior.

fn members_with_features_old( &self, specs: &[PackageIdSpec], cli_features: &CliFeatures, ) -> Vec<(&Package, CliFeatures)>

This is the “old” behavior for command-line feature selection. See allows_new_cli_feature_behavior.

pub fn unit_needs_doc_scrape(&self, unit: &Unit) -> bool

Returns true if unit should depend on the output of Docscrape units.

pub fn add_local_overlay(&mut self, id: SourceId, registry_path: PathBuf)

Adds a local package registry overlaying a SourceId.

See crate::sources::overlay::DependencyConfusionThreatOverlaySource for why you shouldn’t use this.

pub fn package_registry(&self) -> CargoResult<PackageRegistry<'gctx>>

Builds a package registry that reflects this workspace configuration.

fn local_overlays( &self, ) -> CargoResult<impl Iterator<Item = (SourceId, SourceId)>>

Returns all the configured local overlays, including the ones from our secret environment variable.

Trait Implementations

impl<'gctx> Debug for Workspace<'gctx>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 400 bytes