update readme

+ add pyvenv to the repo

README.md

@@ -11,18 +11,18 @@ First you need to make sure the required tools are installed:
 - `git` of course
 
 0. Make sure you have the submodules. Either clone this repo with `--recursive` or do `git submodule update --init`
-1. Create a python virtual environment and activate it, like: `python -m venv venv` then source right activation file for your shell
-2. Run `build_ttf.nu`  
+1. Create a python virtual environment and activate it, like: `python -m venv venv` then source the activation file for your shell (for nushell just run `./pyvenv`)
+2. Run `./build_ttf.nu`  
    this produces the font file in `out/build/MutantStandard-Regular.ttf`
-3. On linux, you could also copy the font and its license to the system fonts by running `sudo install.nu`
+3. On linux, you could also copy the font and its license to the system fonts by running `sudo ./install.nu`
 
 ## License
 
-Everything in this repository is licensed under a MIT license, except the materials used under the repositories in the folliwing folders have their own licensing:
+Everything in this repository is licensed under a MIT license, except the materials used under the repositories in the following folders have their own licensing:
 
-- Mutant Standard emoji in `mutant_standard` are licensed CC BY-NC-SA 4.0 International
-- Orxporter in `orxporter` is licensed under the Cooperative Non-Violent License (CNPL) v4
-- nanoemoji in `nanoemoji` is licensed under the Apache-2.0 license
+- `mutant_standard`: Mutant Standard emoji are licensed CC BY-NC-SA 4.0 International
+- `orxporter`: Orxporter is licensed under the Cooperative Non-Violent License (CNPL) v4
+- `nanoemoji`: nanoemoji is licensed under the Apache-2.0 license
 
 ## Your contributions
 

pyvenv

@@ -0,0 +1,15 @@
+#!/usr/bin/env nu
+
+## activates the python environment in a sub-sub-shell
+# defaults to ./venv
+# deactivate by exiting
+## if command is given after virtual environment location
+# after the command ends, the virtualenv exits
+
+def main [path="./venv" ...command] {
+  if (0 < ($command | length)) {
+    sh -i -c $"source ($path)/bin/activate ; nu -c ($command | str join ' '); exit 0"
+  } else {
+    sh -i -c $"source ($path)/bin/activate ; nu"
+  }
+}