Correct Nushell source command

Author: Yethal

Diff for: src/cli/self_update.rs

@@ -382,9 +382,9 @@ macro_rules! post_install_msg_unix_source_env {
 the corresponding `env` file under {cargo_home}.
 
 This is usually done by running one of the following (note the leading DOT):
-    . "{cargo_home}/env"            # For sh/bash/zsh/ash/dash/pdksh
-    source "{cargo_home}/env.fish"  # For fish
-    source "{cargo_home}/env.nu"    # For nushell
+    . "{cargo_home}/env"                       # For sh/bash/zsh/ash/dash/pdksh
+    source "{cargo_home}/env.fish"             # For fish
+    source $"($nu.home-path)/.cargo/env.nu"    # For nushell
 "#
     };
 }

Diff for: src/cli/self_update/shell.rs

@@ -26,7 +26,7 @@
 use std::borrow::Cow;
 use std::path::PathBuf;
 
-use anyhow::{Result, bail};
+use anyhow::{bail, Result};
 
 use super::utils;
 use crate::process::Process;
@@ -299,7 +299,8 @@ impl UnixShell for Nu {
     }
 
     fn source_string(&self, process: &Process) -> Result<String> {
-        Ok(format!(r#"source "{}/env.nu""#, cargo_home_str(process)?))
+        let cargo_home_nushell = (cargo_home_str(process)?).replace("$HOME", "($nu.home-path)");
+        Ok(format!(r#"source $"{}/env.nu""#, cargo_home_nushell))
     }
 }