Allow providing extra arguments to conan commands

README.md

@@ -75,6 +75,8 @@ fn main() {
         .option(ConanScope::Package("barlib/1.0"), "zoom", "True")
         .config("tools.build:skip_test", "True") // Add some Conan configs
         .remote("conancenter") // The default Conan remote, just to test `--remote`
+        .arg("--core-conf")
+        .arg("core:non_interactive=True")
         .run()
         .parse()
         .emit();

src/lib.rs

@@ -69,6 +69,8 @@
 //!     .option(ConanScope::Package("barlib/1.0"), "zoom", "True")
 //!     .config("tools.build:skip_test", "True") // Add some Conan configs
 //!     .remote("conancenter") // The default Conan remote, just to test `--remote`
+//!     .arg("--core-conf")
+//!     .arg("core:non_interactive=True")
 //!     .run()
 //!     .parse()
 //!     .emit();
@@ -210,6 +212,8 @@ pub struct ConanInstall {
     options: Vec<(String, String, String)>,
     /// Conan output verbosity level
     verbosity: ConanVerbosity,
+    /// Extra `conan install` arguments
+    extra_args: Vec<String>,
 }
 
 /// `conan install` command output data
@@ -378,6 +382,15 @@ impl ConanInstall {
         self
     }
 
+    /// Adds one extra command line argument to the final `conan install` run.
+    ///
+    /// Can be called multiple times per Conan invocation.
+    /// This method is a proxy for [`std::process::Command::arg()`].
+    pub fn arg(&mut self, arg: &str) -> &mut ConanInstall {
+        self.extra_args.push(arg.to_owned());
+        self
+    }
+
     /// Runs the `conan install` command and captures its JSON-formatted output.
     ///
     /// # Panics
@@ -450,6 +463,10 @@ impl ConanInstall {
             command.arg(format!("{key}={value}"));
         }
 
+        self.extra_args.iter().for_each(|x| {
+            command.arg(x);
+        });
+
         let output = command
             .output()
             .expect("failed to run the Conan executable");

tests/integration_test.rs

@@ -18,6 +18,8 @@ fn run_conan_install() {
         .option(ConanScope::Package("libxml2/2.15.0"), "programs", "False")
         .config("tools.build:skip_test", "True")
         .remote("conancenter") // The default Conan remote, just to test `--remote`
+        .arg("--core-conf")
+        .arg("core:non_interactive=True")
         .run();
 
     // Fallback for test debugging
@@ -86,6 +88,25 @@ fn fail_no_profile() {
     assert!(output.stderr().starts_with(b"ERROR: Profile not found: "));
 }
 
+#[test]
+fn fail_unknown_args() {
+    let output = ConanInstall::with_recipe(Path::new("tests/conanfile.txt"))
+        .output_folder(Path::new(env!("CARGO_TARGET_TMPDIR")))
+        .arg("--no-such-argument")
+        .verbosity(ConanVerbosity::Debug)
+        .run();
+
+    std::io::stderr().write_all(output.stderr()).unwrap();
+
+    assert!(!output.is_success());
+    assert_eq!(output.status_code(), 2);
+    assert_eq!(output.stdout().len(), 0);
+    assert!(!output.stderr().is_empty());
+    assert!(str::from_utf8(output.stderr())
+        .unwrap()
+        .contains("error: unrecognized arguments: --no-such-argument"));
+}
+
 #[test]
 fn detect_custom_profile() {
     let output = ConanInstall::with_recipe(Path::new("tests/conanfile.txt"))