feat: add pip builds

In the impure step of the pure build, this uses the `pip download`
command to download binary wheels and source distributions into the
`$out/libexec/deps` directory. Then in the pure build we simply install
everything in that directory.

Author: zmitchell

Makefile

@@ -24,6 +24,9 @@ ruby:
 rust:
 	./test.sh quotes-app-rust
 
+pip:
+	./test.sh quotes-app-pip
+
 
 clean:
 	@for dir in $(shell ls -d */ | tr -d '/'); do \

quotes-app-pip/.flox/.gitattributes

@@ -0,0 +1 @@
+env/manifest.lock linguist-generated=true linguist-language=JSON

quotes-app-pip/.flox/.gitignore

@@ -0,0 +1,5 @@
+run/
+cache/
+lib/
+log/
+!env/

quotes-app-pip/.flox/env.json

@@ -0,0 +1,4 @@
+{
+  "name": "quotes-app-pip",
+  "version": 1
+}