This is a start.

.gitignore

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+venv
+out

.gitmodules

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+[submodule "mutant_standard"]
+	path = mutant_standard
+	url = https://github.com/mutantstandard/build.git
+[submodule "orxporter"]
+	path = orxporter
+	url = https://github.com/mutantstandard/orxporter.git
+[submodule "nanoemoji"]
+	path = nanoemoji
+	url = https://github.com/googlefonts/nanoemoji.git

README.md

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+# Build Mutant Standard as TTF font
+
+Why? Because its a great emoji font! I want to see them all over my desktop.
+
+## How?
+
+First you need to make sure the required tools are installed:
+
+- `nushell` (probably could have made it without, but I like to script using it `¯\_(ツ)_/¯`)
+- `python` (and its virtualenv/venv and pip)
+- `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`  
+   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`
+
+## 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:
+
+- 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
+
+## Your contributions
+
+Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the MIT license, shall be licensed as above, without any additional terms or conditions.

build_ttf.nu

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+#!/usr/bin/nu
+
+# you should be running this from some venv...
+
+#install deps
+pip install -r orxporter/requirements.txt
+pip install -e nanoemoji
+
+#NOTE conversion from/to hex is like this
+# ❯ 128488 | fmt | $in.lowerhex | str substring 2..
+# 1f5e8
+# ❯ "1f5e8" | into int --radix 16
+# 128488
+
+mkdir out
+python ./orxporter/orxport.py -m ./mutant_standard/manifest/out.orx -i ../input -q 32x32 -o ./out/font_sources -F svg -t 8 -f %f/%u
+python ./orxporter/orxport.py -m ./mutant_standard/manifest/out.orx -i ../input -j ./out/meta.json
+open ./out/meta.json | reduce -f {} {|it, acc| try { let emoji = char --integer ...($it.code); $acc |
+  insert ($it.code | each {|i| $i | fmt | $in.lowerhex | str substring 2..} | str join "-") {
+    name: $it.short,
+    glyph_name: (if 0 < ($it.short | find -r "^[0-9]" | length) { "_" | append $it.short | str join } else { $it.short })
+  } } catch { $acc }} | to json | save -f ./out/unicode_map.json
+
+# remove px from lengths as picosvg (used by nanoemoji) dies from it and its fine without px probably
+ls ./out/font_sources/svg/ | get name | par-each {|fp| open $fp | str replace --all -r "(:[0-9.]+)px" "$1" | save -f $fp}
+
+let version = open ./mutant_standard/manifest/font/manifest.json | $in.metadata.version | split row "."
+let version_major = $version | get 0
+let version_minor = $version | get 1
+
+cd out
+#TODO figure out glyphmap generation for glyph names in ttf
+# nanoemoji --color_format glyf_colr_1 --glyphmap_generator ../glyphmap_generator.nu --family "Mutant Standard" --output_file MutantStandard-Regular.ttf --version_major $version_major --version_minor $version_minor ./font_sources/svg/*.svg
+nanoemoji --color_format glyf_colr_1 --family "Mutant Standard" --output_file MutantStandard-Regular.ttf --version_major $version_major --version_minor $version_minor ./font_sources/svg/*.svg

glyphmap_generator.nu

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+#!/usr/bin/nu
+
+# It is recommended to name the glyphs so here we go taking the short names. Undefined codepoints don't make it into the font unfortunately.
+# according some page on the internet: http://silnrsi.github.io/FDBP/en-US/Glyph_Naming.html
+# nanoemoji needs the generator to output csv like: filename,codepoints,glyphname
+#TODO? this may need to be python? why no docs on glyphmap generator usage? I will keep searching...
+
+#NOTE conversion from/to hex is like this
+# ❯ 128488 | fmt | $in.lowerhex | str substring 2..
+# 1f5e8
+# ❯ "1f5e8" | into int --radix 16
+# 128488
+
+def main [...files] {
+  let codes_req = $files | par-each {|fp| $fp | split row "/" | last 1 | get 0 | split row "." | get 0 | {path: $fp, code: $in} }
+  let map = open "./out/unicode_map.json"
+  return ($codes_req | par-each {|e| $"($e.path),($e.code | str replace --all "-" ","),($map | get $e.code | get glyph_name)"} | str join "\n")
+}

install.nu

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+#!/usr/bin/nu
+
+cp -r ./mutant_standard/manifest/license /usr/share/licenses/ttf-mutant-standard
+cp ./out/build/MutantStandard-Regular.ttf /usr/share/fonts/TTF/