...rather than login mode.

I couldn't get rid of the warning that `pyenv init -` no longer sets path until I did this. It looks like setting only on the login shell wasn't enough to hide the warning in other shells I opened. This fits with [how rbenv does the same thing](https://github.com/rbenv/rbenv/blob/master/libexec/rbenv-init#L74).

I'm way out of my depth here, so someone who knows about shell types should definitely review this.

* Add 3.10.0b3

Co-authored-by: Ivan Pozdeev <vano@mail.mipt.ru>

Revert "Drop inferring version to install from `pyenv local`"

PEP 394 now doesn't require `python` presence or specify what it is.
Tests that invoke it use Py3-specific code.

Closes https://github.com/pyenv/pyenv/issues/1921

Debian/Ubuntu's stock `~/.bashrc` prepends `~/.local/bin` to `PATH` towards its end if it exists.
Executables for per-user modules for system Python are installed into `~/.local/bin` --
so need to prepend `shims` to `PATH` later that that.

Co-authored-by: Ivan Pozdeev <vano@mail.mipt.ru>

Drop inferring version to install from `pyenv local`

Create mambaforge-4.10.1-4

Change `done` to `fi` since otherwise Bash emits an unexpected token error:

```
bash: /home/foo/.bashrc: line 120: syntax error near unexpected token `done'
bash: /home/foo/.bashrc: line 120: `if command -v pyenv >/dev/null; then eval "$(pyenv init -)"; done'
```

Add explicit Zsh instructions for MacOS

Indirect ones with errata have proven to confuse users.
Fixes #1947, #1948

install pip with pyston

The default pyston build do not have pip installed by default. This change just add `get_pip` function to have pip installed.

Mention log file if an error happened before building, too

Add pypy3.7-7.3.5, pypy3.7-7.3.4-src, pypy3.7-7.3.5-src

Report cache filename at download

* Added Stackless 2.7.16

Co-authored-by: Nathan <nathan@nathan.v>
Co-authored-by: Ivan Pozdeev <vano@mail.mipt.ru>

Prevent build from installing MacOS apps globally

ldflags_dirs is not needed for Python and causes failures

Update anaconda3-2021.05 - fixed checksum for macOS package

Fixed checksum for macos package

Ensuring that all dirs in LDFLAGS exist is only needed for Ruby due to its `configure` requirements.
If some LDFLAGS entries point to a nonexisting path to which the user doesn't have permission. this causes a build failure.

The $(type -p | head -1) construct expects to always get a path, so need to ignore such aliases with -P

Closes https://github.com/pyenv/pyenv/issues/1662

E.g. "*-latest"
May need splitting into project-specific ones if there emerge projects with different check needed

Closes https://github.com/pyenv/pyenv/issues/1559

Create miniforge3-4.10.1-1

Make test independent of umask

Bash automated install option for the case when ~/.profile sources ~/.bashrc