fix: Normalize filesystem paths with `dunce`

Microsoft Windows has Universal Naming Convention (UNC) paths, see
<https://learn.microsoft.com/en-us/dotnet/standard/io/file-path-formats#unc-paths>

The Rust standard library normalizes paths to this form when calling
`std::fs::canonicalize`, see
<https://doc.rust-lang.org/std/fs/fn.canonicalize.html>

However, some programs, do not parse these paths correctly, including
our ally `git`:

    $ git clone \\?\C:\Users\lorenz\tmp
    Cloning into 'tmp'...
    ssh: Could not resolve hostname \\\\?\\c: No such host is known.
    fatal: Could not read from remote repository.

    Please make sure you have the correct access rights
    and the repository exists.

The `dunce` crate solves the problem of having to deal with
normalization and avoiding weird UNC paths for us. Note that on
non-Windows platforms, it *behaves exactly like*
`std::fs::canonicalize`!

Cargo.lock

@@ -758,6 +758,12 @@ dependencies = [
  "litrs",
 ]
 
+[[package]]
+name = "dunce"
+version = "1.0.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "92773504d58c093f6de2459af4af33faa518c13451eb8f2b5698ed3d36e7c813"
+
 [[package]]
 name = "dyn-clone"
 version = "1.0.17"
@@ -2662,6 +2668,7 @@ dependencies = [
  "colored",
  "crossbeam-channel",
  "cyphernet",
+ "dunce",
  "emojis",
  "fast-glob",
  "fastrand",
@@ -2698,6 +2705,7 @@ version = "0.15.0"
 dependencies = [
  "anyhow",
  "chrono",
+ "dunce",
  "git-ref-format",
  "human-panic",
  "lexopt",
@@ -2901,6 +2909,7 @@ dependencies = [
 name = "radicle-remote-helper"
 version = "0.12.0"
 dependencies = [
+ "dunce",
  "log",
  "radicle",
  "radicle-cli",

Cargo.toml

@@ -27,6 +27,7 @@ chrono = { version = "0.4.26", default-features = false }
 colored = "2.1.0"
 crossbeam-channel = "0.5.6"
 cyphernet = "0.5.2"
+dunce = "1.0.5"
 fastrand = { version = "2.0.0", default-features = false }
 git2 = { version = "0.19.0", default-features = false }
 human-panic = "2"

crates/radicle-cli/Cargo.toml

@@ -16,6 +16,7 @@ path = "src/main.rs"
 [dependencies]
 anyhow = { workspace = true }
 chrono = { workspace = true, features = ["clock", "std"] }
+dunce = { workspace = true }
 git-ref-format = { version = "0.3.0", features = ["macro"] }
 human-panic.workspace = true
 lexopt = { workspace = true }

crates/radicle-cli/src/commands/init.rs

@@ -212,10 +212,7 @@ pub fn init(
     options: Options,
     profile: &profile::Profile,
 ) -> anyhow::Result<()> {
-    let path = repo
-        .workdir()
-        .unwrap_or_else(|| repo.path())
-        .canonicalize()?;
+    let path = dunce::canonicalize(repo.workdir().unwrap_or_else(|| repo.path()))?;
     let interactive = options.interactive;
 
     let default_branch = match find_default_branch(&repo) {

crates/radicle-remote-helper/Cargo.toml

@@ -14,6 +14,7 @@ name = "git-remote-rad"
 path = "src/git-remote-rad.rs"
 
 [dependencies]
+dunce = { workspace = true }
 log = { workspace = true }
 radicle = { workspace = true }
 radicle-cli = { workspace = true }

crates/radicle-remote-helper/src/lib.rs

@@ -162,7 +162,7 @@ pub fn run(profile: radicle::Profile) -> Result<(), Error> {
 
                 // N.b. `working` is the `.git` folder and `fetch::run`
                 // requires the working directory.
-                let working = working.map_err(|_| Error::NoGitDir)?.canonicalize()?;
+                let working = dunce::canonicalize(working.map_err(|_| Error::NoGitDir)?)?;
                 let working = working.parent().ok_or_else(|| Error::NoWorkingCopy {
                     path: working.clone(),
                 })?;

crates/radicle/Cargo.toml

@@ -22,6 +22,7 @@ chrono = { workspace = true, features = ["clock"], optional = true }
 colored = { workspace = true, optional = true }
 crossbeam-channel = { workspace = true }
 cyphernet = { workspace = true, features = ["tor", "dns", "p2p-ed25519"] }
+dunce = { workspace = true }
 fast-glob = { version = "0.3.2" }
 fastrand = { workspace = true }
 git2 = { workspace = true, features = ["vendored-libgit2"] }

crates/radicle/src/profile.rs

@@ -541,7 +541,7 @@ impl Home {
             fs::create_dir_all(path.clone())?;
         }
         let home = Self {
-            path: path.canonicalize()?,
+            path: dunce::canonicalize(path)?,
         };
 
         for dir in &[home.storage(), home.keys(), home.node(), home.cobs()] {

crates/radicle/src/rad.rs

@@ -127,7 +127,7 @@ where
         })?,
         [
             "push",
-            &format!("{}", stored.path().canonicalize()?.display()),
+            &format!("{}", dunce::canonicalize(stored.path())?.display()),
             &pushspec.to_string(),
         ],
         [],
@@ -295,9 +295,7 @@ pub fn checkout<P: AsRef<Path>, S: storage::ReadStorage>(
             "fetch",
             &format!(
                 "{}",
-                stored
-                    .path()
-                    .canonicalize()
+                dunce::canonicalize(stored.path())
                     .map_err(CheckoutError::Fetch)?
                     .display()
             ),