.gitignore

@@ -1,3 +1,2 @@
-/.pre-commit-config.yaml
-__pycache__
 wordclock_credentials.py
+__pycache__

.pre-commit-config.yaml

@@ -0,0 +1,6 @@
+repos:
+  - repo: https://github.com/psf/black
+    rev: stable
+    hooks:
+      - id: black
+        language_version: python3

default.nix

@@ -1,11 +0,0 @@
-let
-  nix-pre-commit-hooks = import (builtins.fetchTarball "https://github.com/cachix/pre-commit-hooks.nix/tarball/master");
-in
-{
-  pre-commit-check = nix-pre-commit-hooks.run {
-    src = ./.;
-    hooks = {
-      black.enable = true;
-    };
-  };
-}

latexpic.sh

@@ -1,10 +1,4 @@
 #!/usr/bin/env bash
-# shellception since nix-shell and shebang does not work with combining texlive
-if ! command -v xelatex >> /dev/null; then
-	nix-shell -p 'texlive.combine { inherit (pkgs.texlive) scheme-small chemfig simplekv siunitx standalone varwidth; }' --run "$0 $@"
-	exit $?
-fi
-
 tmpdir=$(mktemp -d)
 cd $tmpdir
 
@@ -25,7 +19,7 @@ $(cat $OLDPWD/$1)
 \end{document}
 EOF
 
-xelatex doc.tex
+lualatex doc.tex
 mutool draw -o doc.svg doc.pdf
 inkscape -D -A doc.pdf doc.svg
 mutool draw -r 600 -o $OLDPWD/${1}.png doc.pdf

quizlet2anki.py

@@ -1,24 +0,0 @@
-#!/usr/bin/env nix-shell
-#!nix-shell -i python3 -p python3
-# I want to use Anki instead of Quizlet. However, Quizlet only provides a very
-# limited “export” functionality, that exports something like csv, but does nut
-# support quoting. So it will fail if your separation character is either your
-# column or row separator (e.g. if you have multiple lines in one field).
-
-# This script takes unquoted data with uncommon separators (|||||| for columns,
-# \n------\n for rows) and exports it as a more usable csv (quoted, cols
-# separated by \t, rows separated by \n)
-import sys
-
-outfile = sys.argv[1]
-
-quizlet_output = sys.stdin.read()
-
-maybe_tsv = (
-    '"' + quizlet_output.replace("||||||", '"\t"').replace("\n------\n", '"\n"') + '"'
-)
-
-maybe_tsv = maybe_tsv[:-2]
-
-with open(outfile, "w") as f:
-    f.write(maybe_tsv)

shell.nix

@@ -2,9 +2,13 @@
 
 pkgs.mkShell {
   nativeBuildInputs = with pkgs; [
-    nixpkgs-fmt
+    gitAndTools.pre-commit
+    (python3.withPackages(ps: [ ps.virtualenv ]))
   ];
   shellHook = ''
-    ${(import ./default.nix).pre-commit-check.shellHook}
+    # black’s pre-commit hook builds a wheel (zip file) for black and fails
+    # when the timestamp is lower than 1980 (due to zip limitations)
+    export SOURCE_DATE_EPOCH=315532800
+    pre-commit install -f >/dev/null
   '';
 }