Add ability to override targets on cmd line

src/cargo-about/generate.rs

@@ -52,6 +52,12 @@ pub struct Args {
     /// Do not activate the `default` feature
     #[clap(long)]
     no_default_features: bool,
+    /// The target triples to use for dependency graph filtering.
+    ///
+    /// Overrides the `targets` configuration value, and note that unlike cargo
+    /// itself this can take multiple targets instead of just one.
+    #[clap(long)]
+    target: Vec<String>,
     /// Run without accessing the network.
     ///
     /// In addition to cargo not fetching crates, this will mean that only
@@ -63,13 +69,13 @@ pub struct Args {
     ///     copyright information in the license that would be retrieved from
     ///     the original git repo for the crate in question
     #[arg(long)]
-    pub(crate) offline: bool,
+    offline: bool,
     /// Assert that `Cargo.lock` will remain unchanged
     #[arg(long)]
-    pub(crate) locked: bool,
+    locked: bool,
     /// Equivalent to specifying both `--locked` and `--offline`
     #[arg(long)]
-    pub(crate) frozen: bool,
+    frozen: bool,
     /// The path of the Cargo.toml for the root crate.
     ///
     /// Defaults to the current crate or workspace in the current working directory
@@ -194,6 +200,7 @@ pub fn cmd(args: Args, color: crate::Color) -> anyhow::Result<()> {
                     offline: args.offline,
                 },
                 &cfg,
+                &args.target,
             ));
         });
         s.spawn(|_| {

src/lib.rs

@@ -102,6 +102,7 @@ pub fn get_all_crates(
     workspace: bool,
     lock_opts: krates::LockOptions,
     cfg: &licenses::config::Config,
+    target_overrdes: &[String],
 ) -> anyhow::Result<Krates> {
     let mut mdc = krates::Cmd::new();
     mdc.manifest_path(cargo_toml);
@@ -139,7 +140,15 @@ pub fn get_all_crates(
         builder.ignore_kind(krates::DepKind::Build, krates::Scope::NonWorkspace);
     }
 
-    builder.include_targets(cfg.targets.iter().map(|triple| (triple.as_str(), vec![])));
+    if target_overrdes.is_empty() {
+        builder.include_targets(cfg.targets.iter().map(|triple| (triple.as_str(), vec![])));
+    } else {
+        builder.include_targets(
+            target_overrdes
+                .iter()
+                .map(|triple| (triple.as_str(), vec![])),
+        );
+    }
 
     let graph = builder.build(mdc, |filtered: cm::Package| {
         if let Some(src) = filtered.source {