idf-env idf install fails on a pristine environment

[ivmarkov]

• Make sure you don't have an ~/.espressif folder
• Install idf-env with cargo install idf-env --git https://github.com/espressif/idf-env
• do export RUST_BACKTRACE=1
• Issue idf-env idf install
  It panics with output:

ESP-IDF Path: /Users/imarkov/esp/esp-idf-master/
Configuration file not found, creating new one: /Users/imarkov/.espressif/esp_idf.json
thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Os { code: 2, kind: NotFound, message: "No such file or directory" }', src/config.rs:61:54
stack backtrace:
   0: _rust_begin_unwind
   1: core::panicking::panic_fmt
   2: core::result::unwrap_failed
   3: idf_env::config::load_json
   4: idf_env::config::update_property
   5: idf_env::idf::get_install_runner
   6: idf_env::idf::get_install_cmd::{{closure}}
   7: <clap_nested::Command<T> as clap_nested::CommandLike<T>>::run
   8: <clap_nested::MultiCommand<S,T> as clap_nested::CommandLike<S>>::run
   9: clap_nested::Commander<(),T>::run
  10: <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll
  11: tokio::park::thread::CachedParkThread::block_on
  12: tokio::runtime::Runtime::block_on
  13: idf_env::main

Looking at src/config.rs line 61, it seems you are missing a fs::create_dir_all call that should create the ~/.espressif folder first, if it does not exist already.

By the way, all these operations would've been easier if you were using Path / PathBuf based operations, rather than plain string concats. You are lucky that those forward slashes actually do work on Windows. :)

[ivmarkov]

I must say, manually creating the ~/.espressif did not get me much further.
Now when I do idf-env idf install it says Creating virtual environment: /Users/imarkov/.espressif/python_env/idf4.4_py3.8_env

... and then shows a command prompt as if it did everything already. However, when I look in ~/.espressif, I don't see anything.