this script works on both Windows and Linux, however i have yet to add
the feature to automatically acquire a compiler on Linux (Windows gets MSVC).

also note that this script only works on x86\_64 systems,
and when it comes to Linux, it won't run on musl-based OSes
(you should have `/lib64/ld-linux-x86-64.so.2` on your disk)
-- sorry, Alpine users!
this is limitation is largely imposed by the conda ecosystem.

if you want to change the packages installed by default,
you'll need to edit the `main_packages` and `pypi_packages`
arrays within the script.

### examples

* `automamba hello.py`  
  invoke python to execute a local python file.
  a new environment will be created if none have been made.
* `automamba -c 'print("Hello, world!")'`  
  same as the above, but with the program given on the command-line instead.
* `automamba --create`  
  create a new environment. do this once in a while to keep your packages up to date.
* `AM_ENV=aws automamba --create -c conda-forge 'awscli>=2,<3'`  
  create an environment called "aws" and install `awscli` version 2
  from the conda-forge channel.
* `AM_ENV=aws automamba -m awscli ec2 describe-instances`  
  run an AWS command using the previously created environment.
* `automamba --pip install scipybiteopt==1.2`  
  invoke pip to build and install a package. MSVC will be installed if it isn't already,
  since this example requires a C++ compiler.
* `automamba --mamba repoquery depends pip`  
  invoke mamba to look up dependencies.
* `automamba --wheel`  
  execute `./setup.py` with `bdist_wheel` as an argument.
  this configures environment variables similarly to the `--pip` command.
  (this command will probably be removed in the near future)