Add fix flag to doctor subcommand

src/cli/mod.rs

@@ -105,7 +105,7 @@ pub struct CargoMsrvOpts {
 #[command(propagate_version = true)]
 pub enum SubCommand {
     /// Find & fix MSRV related issues
-    Doctor,
+    Doctor(DoctorOpts),
     /// Find the MSRV
     Find(FindOpts),
     /// Display the MSRV's of dependencies
@@ -120,6 +120,14 @@ pub enum SubCommand {
     Verify(VerifyOpts),
 }
 
+#[derive(Debug, Args)]
+#[command(next_help_heading = "Doctor options")]
+pub struct DoctorOpts {
+    /// Try to fix the reported issues
+    #[arg(long)]
+    pub fix: bool,
+}
+
 // Cli Options for top-level cargo-msrv (find) command
 #[derive(Debug, Args)]
 #[command(next_help_heading = "Find MSRV options")]

src/context/doctor.rs

@@ -1,9 +1,12 @@
-use crate::cli::CargoMsrvOpts;
+use crate::cli::{CargoMsrvOpts, SubCommand};
 use crate::context::EnvironmentContext;
 use crate::error::CargoMSRVError;
 
 #[derive(Debug)]
 pub struct DoctorContext {
+    /// Try and fix the issues found!
+    pub fix: bool,
+
     /// Resolved environment options
     pub environment: EnvironmentContext,
 }
@@ -12,9 +15,19 @@ impl TryFrom<CargoMsrvOpts> for DoctorContext {
     type Error = CargoMSRVError;
 
     fn try_from(opts: CargoMsrvOpts) -> Result<Self, Self::Error> {
-        let CargoMsrvOpts { shared_opts, .. } = opts;
+        let CargoMsrvOpts {
+            shared_opts,
+            subcommand,
+            ..
+        } = opts;
+
+        let doctor_opts = match subcommand {
+            SubCommand::Doctor(opts) => opts,
+            _ => unreachable!("This should never happen. The subcommand is not `doctor`!"),
+        };
 
         Ok(Self {
+            fix: doctor_opts.fix,
             environment: (&shared_opts).try_into()?,
         })
     }

src/context/mod.rs

@@ -119,7 +119,7 @@ impl TryFrom<CargoMsrvOpts> for Context {
 
     fn try_from(opts: CargoMsrvOpts) -> Result<Self, Self::Error> {
         let ctx = match opts.subcommand {
-            SubCommand::Doctor => Self::Doctor(DoctorContext::try_from(opts)?),
+            SubCommand::Doctor(_) => Self::Doctor(DoctorContext::try_from(opts)?),
             SubCommand::Find(_) => Self::Find(FindContext::try_from(opts)?),
             SubCommand::List(_) => Self::List(ListContext::try_from(opts)?),
             SubCommand::Set(_) => Self::Set(SetContext::try_from(opts)?),