Prevent cargo init in home directory

src/cargo/ops/cargo_new.rs

@@ -6,6 +6,7 @@ use crate::util::{GlobalContext, restricted_names};
 use anyhow::{Context as _, anyhow};
 use cargo_util::paths::{self, write_atomic};
 use cargo_util_schemas::manifest::PackageName;
+use home::home_dir;
 use serde::Deserialize;
 use serde::de;
 use std::collections::BTreeMap;
@@ -495,6 +496,15 @@ pub fn init(opts: &NewOptions, gctx: &GlobalContext) -> CargoResult<NewProjectKi
     }
 
     let path = &opts.path;
+
+    if let Some(home) = home_dir() {
+        if path == &home {
+            anyhow::bail!(
+                "cannot create package in the home directory\n\n\
+                 help: use `cargo init <path>` to create a package in a different directory"
+            )
+        }
+    }
     let name = get_name(path, opts)?;
     let mut src_paths_types = vec![];
     detect_source_paths_and_types(path, name, &mut src_paths_types)?;

tests/testsuite/cargo_init/in_home_directory/mod.rs

@@ -0,0 +1,15 @@
+use crate::prelude::*;
+use cargo_test_support::file;
+use cargo_test_support::paths;
+use cargo_test_support::str;
+
+#[cargo_test]
+fn case() {
+    snapbox::cmd::Command::cargo_ui()
+        .arg_line("init")
+        .current_dir(paths::home())
+        .assert()
+        .code(101)
+        .stdout_eq(str![""])
+        .stderr_eq(file!["stderr.term.svg"]);
+}

tests/testsuite/cargo_init/mod.rs

@@ -20,6 +20,7 @@ mod git_autodetect;
 mod git_ignore_exists_no_conflicting_entries;
 mod help;
 mod ignores_failure_to_format_source;
+mod in_home_directory;
 mod inferred_bin_with_git;
 mod inferred_lib_with_git;
 mod inherit_workspace_package_table;

tests/testsuite/new.rs

@@ -556,16 +556,15 @@ fn git_default_branch() {
 
 #[cargo_test]
 fn non_utf8_str_in_ignore_file() {
-    let gitignore = paths::home().join(".gitignore");
-    File::create(gitignore).unwrap();
+    let dir = paths::home().join("foo");
+    fs::create_dir(&dir).unwrap();
+    fs::write(dir.join(".gitignore"), &[0xFF, 0xFE]).unwrap();
 
-    fs::write(paths::home().join(".gitignore"), &[0xFF, 0xFE]).unwrap();
-
-    cargo_process(&format!("init {} --vcs git", paths::home().display()))
+    cargo_process(&format!("init {} --vcs git", dir.display()))
         .with_status(101)
         .with_stderr_data(str![[r#"
 [CREATING] binary (application) package
-[ERROR] Failed to create package `home` at `[ROOT]/home`
+[ERROR] Failed to create package `foo` at `[ROOT]/home/foo`
 
 Caused by:
   Character at line 0 is invalid. Cargo only supports UTF-8.