Add a clean command to clear the cache (#41)

Cargo.lock

@@ -1670,6 +1670,7 @@ name = "puffin-cli"
 version = "0.1.0"
 dependencies = [
  "anyhow",
+ "cacache",
  "clap",
  "colored",
  "directories",

Cargo.toml

@@ -14,6 +14,7 @@ license = "MIT OR Apache-2.0"
 [workspace.dependencies]
 anyhow = { version = "1.0.75" }
 bitflags = { version = "2.4.0" }
+cacache = { version = "11.7.1", default-features = false, features = ["tokio-runtime"] }
 clap = { version = "4.4.6" }
 colored = { version = "2.0.4" }
 configparser = { version = "3.0.2" }

crates/puffin-cli/Cargo.toml

@@ -15,6 +15,7 @@ platform-host = { path = "../platform-host" }
 puffin-resolver = { path = "../puffin-resolver" }
 
 anyhow = { workspace = true }
+cacache = { workspace = true }
 clap = { workspace = true, features = ["derive"] }
 colored = { workspace = true }
 directories = { workspace = true }

crates/puffin-cli/src/commands/clean.rs

@@ -0,0 +1,17 @@
+use std::path::Path;
+
+use anyhow::Result;
+use tracing::info;
+
+use crate::commands::ExitStatus;
+
+/// Clear the cache.
+pub(crate) async fn clean(cache: Option<&Path>) -> Result<ExitStatus> {
+    let Some(cache) = cache else {
+        return Err(anyhow::anyhow!("No cache found"));
+    };
+
+    info!("Clearing cache at {}", cache.display());
+    cacache::clear(cache).await?;
+    Ok(ExitStatus::Success)
+}

crates/puffin-cli/src/commands/mod.rs

@@ -1,8 +1,10 @@
 use std::process::ExitCode;
 
+pub(crate) use clean::clean;
 pub(crate) use compile::compile;
 pub(crate) use sync::sync;
 
+mod clean;
 mod compile;
 mod sync;
 

crates/puffin-cli/src/main.rs

@@ -24,6 +24,8 @@ enum Commands {
     Compile(CompileArgs),
     /// Sync dependencies from a `requirements.txt` file.
     Sync(SyncArgs),
+    /// Clear the cache.
+    Clean,
 }
 
 #[derive(Args)]
@@ -73,6 +75,7 @@ async fn main() -> ExitCode {
             )
             .await
         }
+        Commands::Clean => commands::clean(dirs.as_ref().map(ProjectDirs::cache_dir)).await,
     };
 
     match result {

crates/puffin-installer/Cargo.toml

@@ -16,9 +16,9 @@ puffin-interpreter = { path = "../puffin-interpreter" }
 wheel-filename = { path = "../wheel-filename" }
 
 anyhow = { workspace = true }
+cacache = { workspace = true }
 tempfile = { workspace = true }
-tracing = { workspace = true }
-url = { workspace = true }
 tokio = { workspace = true }
 tokio-util = { workspace = true }
-cacache = { version = "11.7.1", default-features = false, features = ["tokio-runtime"] }
+tracing = { workspace = true }
+url = { workspace = true }