You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: path.rs
    path of file: ./repos/habitat/components/common/src/util
    
    the code of the file until where you have to start completion: use crate::{command::package::install::{self,
                                        InstallHookMode,
                                        InstallMode,
                                        LocalPackageUsage},
            error::{Error,
                    Result},
            ui,
            PROGRAM_NAME};
use habitat_core::{self,
                   fs::{cache_artifact_path,
                        fs_rooted_path,
                        FS_ROOT_PATH},
                   package::{PackageIdent,
                             PackageInstall,
                             PackageTarget},
                   url::default_bldr_url,
                   ChannelIdent};
use std::{env,
          fs::File,
          io::{self,
               prelude::*,
               BufReader},
          path::PathBuf,
          str::FromStr};

// The package identifier for the OS specific interpreter which the Supervisor is built with,
// or which may be independently installed
#[cfg(any(target_os = "linux", target_os = "macos"))]
habitat_core::env_config_string!(InterpreterIdent,
                                 HAB_INTERPRETER_IDENT,
                                 "core/busybox-static");

#[cfg(target_os = "windows")]
habitat_core::env_config_string!(InterpreterIdent, HAB_INTERPRETER_IDENT, "core/powershell");

const VERSION: &str = include_str!(concat!(env!("OUT_DIR"), "/VERSION"));

/// Returns a list of path entries, one of which should contain the interpreter binary.
///
/// The Supervisor provides a minimal userland of commands to the supervised process. This includes
/// binaries such as `chpst` which can be used by a package's `run` hook.
///
/// There is a series of fallback strategies used here in order to find a usable interpreter
/// installation. The general strategy is the following:
///
/// * Are we (the Supervisor) running inside a package?
///     * Yes: use the interpreter release describes in our `DEPS` metafile & retur
    
async fn interpreter_paths() -> Result<Vec<PathBuf>> {
    // First, we'll check if we're running inside a package. If we are, then we should  be able to
    // access the `../DEPS` metadata file and read it to get the specific version of the
    // interpreter.
    let my_interpreter_dep_ident = match env::current_exe() {
        Ok(p) => {
            match p.parent() {
                Some(p) => {
                    let metafile = p.join("../DEPS");
                    if metafile.is_file() {
                        interpreter_dep_from_metafile(metafile)
                    } else {
                        None
                    }
                }
                None => None,
            }
        }
        Err(_) => None,
    };
    let interpreter_paths: Vec<PathBuf> = match my_interpreter_dep_ident {
        // We've found the specific release that our Supervisor was built with. Get its path
        // metadata.
        Some(ident) => {
            let pkg_install = PackageInstall::load(&ident, Some(FS_ROOT_PATH.as_ref()))?;
            pkg_install.paths()?
        }
        // If we're not running out of a package, then see if any package of the interpreter is
        // installed.
        None => {
            let ident = PackageIdent::from_str(&InterpreterIdent::configured_value().0)?;
            match PackageInstall::load(&ident, Some(FS_ROOT_PATH.as_ref())) {
                // We found a version of the interpreter. Get its path metadata.
                Ok(pkg_install) => pkg_install.paths()?,
                // Nope, no packages of the interpreter installed. Now we're going to see if the
                // interpreter command is present on `PATH`.
                Err(_) => {
                    match install::type_erased_start(&mut ui::NullUi::new(),
                                                     &default_bldr_url(),
                                                     &ChannelIdent::stable(),
                                                     &(ident.clone(),
                                                       PackageTarget::active_target())
                                                                                      .into(),
                                                     &PROGRAM_NAME,
                                                     VERSION,
                                                     FS_ROOT_PATH.as_path(),
                                                     &cache_artifact_path(None::<String>),
                                                     None,
                                                     &InstallMode::default(),
                                                     &LocalPackageUsage::default(),
                                                     InstallHookMode::default()).await
                    {
                        Ok(pkg_install) => pkg_install.paths()?,
                        Err(err) => {
                            return Err(Error::PackageFailedToInstall(ident, Box::new(err)))
                        }
                    }
                }
            }
        }
    };
    Ok(interpreter_paths)
}