Path migration 1 (#13309)

# Description
Part 1 of replacing `std::path` types with `nu_path` types added in
#13115.

crates/nu-command/src/env/config/config_env.rs

@@ -60,12 +60,13 @@ impl Command for ConfigEnv {
         let (editor_name, editor_args) = get_editor(engine_state, stack, call.head)?;
         let paths = nu_engine::env::path_str(engine_state, stack, call.head)?;
         let cwd = engine_state.cwd(Some(stack))?;
-        let editor_executable =
-            crate::which(&editor_name, &paths, &cwd).ok_or(ShellError::ExternalCommand {
+        let editor_executable = crate::which(&editor_name, &paths, cwd.as_ref()).ok_or(
+            ShellError::ExternalCommand {
                 label: format!("`{editor_name}` not found"),
                 help: "Failed to find the editor executable".into(),
                 span: call.head,
-            })?;
+            },
+        )?;
 
         let Some(env_path) = engine_state.get_config_path("env-path") else {
             return Err(ShellError::GenericError {

crates/nu-command/src/env/config/config_nu.rs

@@ -64,12 +64,13 @@ impl Command for ConfigNu {
         let (editor_name, editor_args) = get_editor(engine_state, stack, call.head)?;
         let paths = nu_engine::env::path_str(engine_state, stack, call.head)?;
         let cwd = engine_state.cwd(Some(stack))?;
-        let editor_executable =
-            crate::which(&editor_name, &paths, &cwd).ok_or(ShellError::ExternalCommand {
+        let editor_executable = crate::which(&editor_name, &paths, cwd.as_ref()).ok_or(
+            ShellError::ExternalCommand {
                 label: format!("`{editor_name}` not found"),
                 help: "Failed to find the editor executable".into(),
                 span: call.head,
-            })?;
+            },
+        )?;
 
         let Some(config_path) = engine_state.get_config_path("config-path") else {
             return Err(ShellError::GenericError {

crates/nu-command/src/filesystem/cd.rs

@@ -1,5 +1,6 @@
 use nu_cmd_base::util::get_init_cwd;
 use nu_engine::command_prelude::*;
+use nu_path::AbsolutePathBuf;
 use nu_utils::filesystem::{have_permission, PermissionResult};
 
 #[derive(Clone)]
@@ -43,7 +44,10 @@ impl Command for Cd {
 
         // If getting PWD failed, default to the initial directory. This way, the
         // user can use `cd` to recover PWD to a good state.
-        let cwd = engine_state.cwd(Some(stack)).unwrap_or(get_init_cwd());
+        let cwd = engine_state
+            .cwd(Some(stack))
+            .map(AbsolutePathBuf::into_std_path_buf)
+            .unwrap_or(get_init_cwd());
 
         let path_val = {
             if let Some(path) = path_val {

crates/nu-command/src/path/type.rs

@@ -1,13 +1,11 @@
 use super::PathSubcommandArguments;
 use nu_engine::command_prelude::*;
+use nu_path::AbsolutePathBuf;
 use nu_protocol::engine::StateWorkingSet;
-use std::{
-    io,
-    path::{Path, PathBuf},
-};
+use std::{io, path::Path};
 
 struct Arguments {
-    pwd: PathBuf,
+    pwd: AbsolutePathBuf,
 }
 
 impl PathSubcommandArguments for Arguments {}

crates/nu-command/src/system/exec.rs

@@ -39,7 +39,7 @@ On Windows based systems, Nushell will wait for the command to finish and then e
         let name: Spanned<String> = call.req(engine_state, stack, 0)?;
         let executable = {
             let paths = nu_engine::env::path_str(engine_state, stack, call.head)?;
-            let Some(executable) = crate::which(&name.item, &paths, &cwd) else {
+            let Some(executable) = crate::which(&name.item, &paths, cwd.as_ref()) else {
                 return Err(crate::command_not_found(
                     &name.item,
                     call.head,

crates/nu-command/src/system/run_external.rs

@@ -79,7 +79,7 @@ impl Command for External {
             // Determine the PATH to be used and then use `which` to find it - though this has no
             // effect if it's an absolute path already
             let paths = nu_engine::env::path_str(engine_state, stack, call.head)?;
-            let Some(executable) = which(expanded_name, &paths, &cwd) else {
+            let Some(executable) = which(expanded_name, &paths, cwd.as_ref()) else {
                 return Err(command_not_found(&name_str, call.head, engine_state, stack));
             };
             executable
@@ -228,7 +228,7 @@ pub fn eval_arguments_from_call(
             match arg {
                 // Expand globs passed to run-external
                 Value::Glob { val, no_expand, .. } if !no_expand => args.extend(
-                    expand_glob(&val, &cwd, expr.span, engine_state.signals())?
+                    expand_glob(&val, cwd.as_ref(), expr.span, engine_state.signals())?
                         .into_iter()
                         .map(|s| s.into_spanned(expr.span)),
                 ),

crates/nu-command/src/viewers/griddle.rs

@@ -83,7 +83,7 @@ prints out the list properly."#
                         separator_param,
                         env_str,
                         use_grid_icons,
-                        &cwd,
+                        cwd.as_ref(),
                     )?)
                 } else {
                     Ok(PipelineData::empty())
@@ -101,7 +101,7 @@ prints out the list properly."#
                         separator_param,
                         env_str,
                         use_grid_icons,
-                        &cwd,
+                        cwd.as_ref(),
                     )?)
                 } else {
                     // dbg!(data);
@@ -124,7 +124,7 @@ prints out the list properly."#
                     separator_param,
                     env_str,
                     use_grid_icons,
-                    &cwd,
+                    cwd.as_ref(),
                 )?)
             }
             x => {