diff --git a/.bin/256color b/.bin/256color
deleted file mode 100755
index c33cd1f..0000000
--- a/.bin/256color
+++ /dev/null
@@ -1,38 +0,0 @@
-#! /bin/sh
-set -euf
-
-pl() {
-  for i in $(seq $1 $(expr $2 - 1)); do
-    printf '\e[38;5;%sm%03i\e[m ' $i $i
-  done
-  printf '\e[38;5;%sm%03i\e[m\n' $2 $2
-}
-
-p() {
-  printf '\e[38;5;%sm%03i\e[m ' $1 $1
-}
-pn() {
-  printf '\e[38;5;%sm%03i\e[m\n' $1 $1
-}
-
-p6x6() {
-  for i in $(seq 0 5); do
-    for j in $(seq 0 5); do
-      p $(expr $1 + $i + $j \* 6)
-    done
-    echo
-  done
-}
-
-pl 0 7
-pl 8 15
-
-p6x6 16
-p6x6 52
-p6x6 88
-p6x6 124
-p6x6 160
-p6x6 196
-
-pl 232 243
-pl 244 255
diff --git a/.bin/avesta.sed b/.bin/avesta.sed
deleted file mode 100755
index 7cedb1e..0000000
--- a/.bin/avesta.sed
+++ /dev/null
@@ -1,54 +0,0 @@
-#!/usr/bin/env -S sed -f
-s/ā̊/𐬃/g
-s/t̰/𐬝/g
-s/ṣ̌/𐬴/g
-s/š́/𐬳/g
-s/ą̄/𐬅/g
-s/ŋᵛ/𐬤/g
-s/ə̄/𐬇/g
-s/ŋ́/𐬣/g
-s/x́/𐬒/g
-s/xᵛ/𐬓/g
-s/a/𐬀/g
-s/ā/𐬁/g
-s/å/𐬂/g
-s/ą/𐬄/g
-s/ə/𐬆/g
-s/e/𐬈/g
-s/ē/𐬉/g
-s/o/𐬊/g
-s/ō/𐬋/g
-s/i/𐬌/g
-s/ī/𐬍/g
-s/u/𐬎/g
-s/ū/𐬏/g
-s/k/𐬐/g
-s/x/𐬑/g
-s/g/𐬔/g
-s/ġ/𐬕/g
-s/γ/𐬖/g
-s/c/𐬗/g
-s/j/𐬘/g
-s/t/𐬙/g
-s/θ/𐬚/g
-s/d/𐬛/g
-s/δ/𐬜/g
-s/p/𐬞/g
-s/f/𐬟/g
-s/b/𐬠/g
-s/β/𐬡/g
-s/ŋ/𐬢/g
-s/n/𐬥/g
-s/ń/𐬦/g
-s/ṇ/𐬧/g
-s/m/𐬨/g
-s/m̨/𐬩/g
-s/ẏ/𐬫/g
-s/y/𐬪/g
-s/v/𐬬/g
-s/r/𐬭/g
-s/s/𐬯/g
-s/z/𐬰/g
-s/š/𐬱/g
-s/ž/𐬲/g
-s/h/𐬵/g
diff --git a/.bin/bvg.sh b/.bin/bvg.sh
deleted file mode 100755
index 690e021..0000000
--- a/.bin/bvg.sh
+++ /dev/null
@@ -1,46 +0,0 @@
-#!/bin/sh
-interesting="U6 N6 140 M46 184 N84"
-
-curl -sSL 'https://www.bvg.de/disruption-reports/q' \
-  --data-raw '{"variables":{},"query":"{
-    allDisruptions {
-      disruptions {
-        meldungsId
-        linie
-        verkehrsmittel
-        __typename
-        ... on Traffic {
-          datum
-          gueltigVonDatum
-          gueltigVonZeit
-          gueltigBisDatum
-          gueltigBisZeit
-          richtungName
-          richtungHafasId
-          beginnAbschnittName
-          beginnAbschnittHafasId
-          endeAbschnittName
-          endeAbschnittHafasId
-          textIntUrsache
-          sev
-          textIntAuswirkung
-          umfahrung
-          textWAPSMSUrsache
-          textWAPSMSAuswirkung
-          prioritaet
-          __typename
-        }
-      }
-      __typename
-    }
-  }"}' \
-  | jq --arg interesting "$interesting" '
-    .data.allDisruptions.disruptions
-    | map(select(
-      (.linie as $linie
-      | $interesting
-      | split(" ")
-      | index($linie))
-      and (.["__typename"] == "Traffic")
-    ))
-  '
diff --git a/.bin/chunk-pdf b/.bin/chunk-pdf
deleted file mode 100755
index 86b2b69..0000000
--- a/.bin/chunk-pdf
+++ /dev/null
@@ -1,23 +0,0 @@
-#! /usr/bin/env nix-shell
-#! nix-shell -i bash -p pdftk gnugrep
-set -efu
-
-INPUT_FILE="${2:?Pass the PDF path as second argument.}"
-PAGES_PER_REPORT="${1:?Pass the chunk size as first argument.}"
-
-if [ ! -f "$INPUT_FILE" ]; then
-  echo >&2 "File $INPUT_FILE does not exist."
-  exit 1
-fi
-
-TOTAL_PAGES="$(pdftk "$INPUT_FILE" dump_data | grep NumberOfPages | cut -f2 -d' ')"
-
-RUNS=$((TOTAL_PAGES/PAGES_PER_REPORT))
-
-for run in $(seq 0 "$((RUNS-1))"); do
-  start_page=$((run*PAGES_PER_REPORT+1))
-  end_page=$(((run+1)*PAGES_PER_REPORT))
-  output_file="chunk_$((run+1)).pdf"
-  echo "splitting $INPUT_FILE from $start_page to $end_page into $output_file"
-  pdftk "$INPUT_FILE" cat "$start_page-$end_page" output "$output_file"
-done
diff --git a/.bin/csv2json b/.bin/csv2json
deleted file mode 100755
index 064e4ef..0000000
--- a/.bin/csv2json
+++ /dev/null
@@ -1,14 +0,0 @@
-#!/usr/bin/env python3
-
-import csv
-import json
-import sys
-import argparse
-
-parser = argparse.ArgumentParser()
-parser.add_argument("--delimiter", "-d", default=",", help="CSV field separator")
-
-args = parser.parse_args()
-
-if __name__ == "__main__":
-    json.dump(list(csv.DictReader(sys.stdin, delimiter=args.delimiter)), sys.stdout)
diff --git a/.bin/fix-sd.sh b/.bin/fix-sd.sh
deleted file mode 100755
index 456a8ff..0000000
--- a/.bin/fix-sd.sh
+++ /dev/null
@@ -1,21 +0,0 @@
-#!/bin/sh
-set -xfu
-
-drive="$1"
-mountpoint="/media/sd-card-$(date +%s)"
-backup_directory="$(pwd)"
-
-trap clean EXIT
-clean() {
-  umount "$mountpoint"
-  rmdir "$mountpoint"
-  fsck.exfat "$drive"
-}
-
-filenames="$(fsck.exfat "$drive" 2>&1 | sed -nE "s/.* file '(.*?)' is not allocated.*/\1/p")"
-mkdir "$mountpoint"
-mount "$drive" "$mountpoint"
-
-echo "$filenames" | while read -r filename; do
-  find "$mountpoint" -type f -name "$filename" -exec mv {} "$backup_directory" \;
-done
diff --git a/.bin/json2csv b/.bin/json2csv
deleted file mode 100755
index 0f1f7a1..0000000
--- a/.bin/json2csv
+++ /dev/null
@@ -1,24 +0,0 @@
-#!/usr/bin/env python3
-import csv
-import json
-import sys
-
-if __name__ == "__main__":
-    json_list = json.load(sys.stdin)
-    if not isinstance(json_list, list):
-        print("JSON object is not a list.", file=sys.stderr)
-        sys.exit(1)
-    if len(json_list) == 0:
-        print("JSON list is empty.", file=sys.stderr)
-        sys.exit(1)
-    keys = set()
-    for element in json_list:
-        if isinstance(element, dict):
-            keys |= element.keys()
-        else:
-            print("Non-dict element:", element, file=sys.stderr)
-            sys.exit(1)
-    writer = csv.DictWriter(sys.stdout, fieldnames=list(keys))
-    writer.writeheader()
-    for element in json_list:
-        writer.writerow(element)
diff --git a/.bin/mp3player-write b/.bin/mp3player-write
deleted file mode 100755
index 7072631..0000000
--- a/.bin/mp3player-write
+++ /dev/null
@@ -1,117 +0,0 @@
-#!/usr/bin/env bash
-
-# Usage:
-# ./mp3_transfer.sh -s 1.3 /mnt/mp3player file1.m4a file2.m4a ...
-
-set -e
-
-# Default speed
-SPEED=1.0
-
-# Parse options
-while getopts ":s:" opt; do
-  case $opt in
-    s)
-      SPEED=$OPTARG
-      ;;
-    \?)
-      echo "Invalid option: -$OPTARG" >&2
-      exit 1
-      ;;
-    :)
-      echo "Option -$OPTARG requires a value." >&2
-      exit 1
-      ;;
-  esac
-done
-
-# Shift past the options
-shift $((OPTIND -1))
-
-# Check arguments
-if [ "$#" -lt 2 ]; then
-  echo "Usage: $0 [-s speed] MOUNT_POINT FILE1 [FILE2 ...]"
-  exit 1
-fi
-
-MOUNT_POINT=$1
-shift
-FILES=("$@")
-
-# Check mount point exists
-if [ ! -d "$MOUNT_POINT" ]; then
-  echo "Error: Mount point '$MOUNT_POINT' does not exist."
-  exit 1
-fi
-
-# Estimate required space
-TOTAL_SIZE=0
-for f in "${FILES[@]}"; do
-  if [ ! -f "$f" ]; then
-    echo "Warning: File '$f' does not exist, skipping."
-    continue
-  fi
-  # Get file size in bytes
-  FILE_SIZE=$(stat --printf="%s" "$f")
-  # Estimate mp3 output size: roughly 1/2 of original m4a (adjust if needed)
-  TOTAL_SIZE=$((TOTAL_SIZE + FILE_SIZE / 2))
-done
-
-# Get available space in bytes
-AVAILABLE=$(df --output=avail "$MOUNT_POINT" | tail -n 1)
-AVAILABLE=$((AVAILABLE * 1024))  # df reports in KB
-
-if [ "$TOTAL_SIZE" -gt "$AVAILABLE" ]; then
-  echo "Error: Not enough space on device. Required: $TOTAL_SIZE bytes, Available: $AVAILABLE bytes"
-  exit 1
-fi
-
-echo "Enough space available. Starting conversion..."
-
-sanitize_filename() {
-  local name="$1"
-  # Remove path, keep only base name
-  name=$(basename "$name")
-  # Remove any extension
-  name=${name%.*}
-  # Replace spaces and special chars with underscore
-  name=$(echo "$name" | tr ' ' '_' | tr -cd '[:alnum:]_-')
-  # Truncate to max 50 chars
-  echo "${name:0:50}"
-}
-
-# Convert and copy files
-for f in "${FILES[@]}"; do
-  if [ ! -f "$f" ]; then
-    continue
-  fi
-
-  # Determine the next prefix
-  existing_prefixes=$(ls "$MOUNT_POINT" | grep -E '^[0-9].*\.mp3$' | sed -E 's/^([0-9]).*/\1/' | sort -n | uniq)
-  for i in {0..9}; do
-    if ! echo "$existing_prefixes" | grep -q "^$i$"; then
-      PREFIX=$i
-      break
-    fi
-  done
-
-  echo "Using prefix: $PREFIX"
-
-  BASENAME=$(sanitize_filename "$f")
-  OUT_PATTERN="$MOUNT_POINT/${PREFIX}_%03d_${BASENAME}.mp3"
-
-  echo "Converting '$f' to '$OUT_PATTERN' at speed $SPEED..."
-
-  ffmpeg -nostdin -i "$f" \
-    -filter:a "atempo=$SPEED" \
-    -ar 22050 -ac 1 -c:a libmp3lame -b:a 32k \
-    -f segment -segment_time 300 \
-    "$OUT_PATTERN"
-
-  # Update prefix for next file
-  # Count how many segments were created
-  SEG_COUNT=$(ls "$MOUNT_POINT" | grep -E "^${PREFIX}[0-9]{2}_" | wc -l)
-  PREFIX=$((PREFIX + SEG_COUNT))
-done
-
-echo "All files processed successfully."
diff --git a/.bin/mushakkil.sh b/.bin/mushakkil.sh
deleted file mode 100755
index 08716d4..0000000
--- a/.bin/mushakkil.sh
+++ /dev/null
@@ -1,6 +0,0 @@
-#!/bin/sh
-curl -sSL 'https://diac.alsharekh.org/Diac/DiacText' \
-  -H "Content-Type: application/json" \
-  --data-raw "$(jq --raw-input '{word: ., type: 1}')" \
-  --compressed \
-  | jq -r .diacWord
diff --git a/.bin/nix-haddock-index b/.bin/nix-haddock-index
deleted file mode 100755
index 294e3df..0000000
--- a/.bin/nix-haddock-index
+++ /dev/null
@@ -1,93 +0,0 @@
-#! /usr/bin/env nix-shell
-#! nix-shell -i bash -p coreutils gnugrep gnused graphviz
-#
-# usage: nix-haddock-index
-#
-# Run this script in an environment where either NIX_GHC is set, or the ghc
-# executable exists, to generate an HTML index file pointing to all Haddock
-# files accessible to the respective ghc version.
-#
-# Additionally, an SVG dependency graph of all packages is linked at the
-# bottom of the index file.
-#
-# Note: all files will be generated in /tmp, and won't be deleted automatically
-#
-
-set -efux
-
-if test -z "${NIX_GHC-}"; then
-  NIX_GHC=$(readlink -f "$(type -P ghc)")
-fi
-
-if ! echo $NIX_GHC | grep -q '^/nix/store/'; then
-  printf '%s: error: unsupported GHC executable path (not in Nix store): %q\n' \
-      "$0" \
-      "$NIX_GHC" \
-    >&2
-  exit -1
-fi
-
-NIX_GHC_PREFIX=$(dirname "$(dirname "$NIX_GHC")")
-NIX_GHC_DOCDIR=$NIX_GHC_PREFIX/share/doc/ghc/html
-
-main() {
-
-  hash=$(echo $NIX_GHC_PREFIX | sed -n 's|^/nix/store/\([a-z0-9]\+\).*|\1|p')
-  title="Haddock index for $NIX_GHC_PREFIX"
-
-  header=$(
-    printf 'Haddock index for <a href="%s">%s</a>\n' \
-        $NIX_GHC_PREFIX \
-        $NIX_GHC_PREFIX \
-  )
-
-  suffix=${hash:+-$hash}
-  index_file=/tmp/haddock$suffix-index.html
-  svg_file=/tmp/haddock$suffix.svg
-
-  #if ! test -e $index_file; then
-    eval "$(
-      echo 'gen_index() {'
-      echo '  html_head'
-      "$NIX_GHC_PREFIX"/bin/ghc-pkg dump | sed -n '
-        s/^---$/  reset/p
-        s/^\(name\|version\):\s*\([-A-Za-z0-9_.]\+\)$/  \1=\2/p
-        s/^haddock-html:\s*\([-A-Za-z0-9_./]\+\)$/  haddock_html \1/p
-      '
-      echo '  html_foot'
-      echo '}'
-    )"
-
-    gen_index > $index_file
-  #fi
-
-  #if ! test -e $svg_file; then
-    "$NIX_GHC_PREFIX"/bin/ghc-pkg dot | tred | dot -Tsvg | sed '
-      s/<svg width="[0-9]\+pt" height="[0-9]\+pt"/<svg width="3600px" height="100%"/
-    ' > $svg_file
-  #fi
-
-  echo $index_file
-}
-reset() {
-  unset name version
-}
-haddock_html() {
-  printf '<li>'
-  printf '<a href="%s/index.html">%s</a>' "$1" "$name-$version"
-  printf '</li>\n'
-}
-html_head() {
-  printf '<!doctype html>\n'
-  printf '<title>%s</title>\n' "$title"
-  printf '<link href="%s" rel="stylesheet" type="text/css">\n' \
-      "$NIX_GHC_DOCDIR/libraries/ocean.css"
-  printf '<h1>%s</h1>\n' "$header"
-  printf '<ul>\n'
-}
-html_foot() {
-  printf '</ul>\n'
-  printf '<a href="%s">graph</a>\n' "$svg_file"
-}
-
-main "$@"
diff --git a/.bin/pdf-ocr.sh b/.bin/pdf-ocr.sh
deleted file mode 100755
index 66f56c3..0000000
--- a/.bin/pdf-ocr.sh
+++ /dev/null
@@ -1,23 +0,0 @@
-#!/usr/bin/env nix-shell
-#! nix-shell -i bash -p poppler_utils tesseract4
-set -eu
-
-pdf_path="$(realpath "$1")"
-
-[ -f "$pdf_path" ] || {
-  echo "Usage: $0 FILE.pdf" >&2
-  exit 1
-}
-
-
-tmpdir="$(mktemp -d)"
-trap 'rm -rf $tmpdir' EXIT
-
-cd "$tmpdir"
-
-pdftoppm -png "$pdf_path" pdf-ocr
-for png in pdf-ocr*.png; do
-  tesseract "$png" "$png.txt" 2>/dev/null
-done
-
-cat pdf-ocr-*.txt
diff --git a/.bin/prospekte.sh b/.bin/prospekte.sh
deleted file mode 100755
index 383d54b..0000000
--- a/.bin/prospekte.sh
+++ /dev/null
@@ -1,65 +0,0 @@
-#!/bin/sh
-lidl() {
-  echo LIDL
-  curl -sSL 'https://endpoints.lidl-flyer.com/v3/region-overview/lidl/de-DE/0.json' \
-    | jq -r '
-      .categories
-      | map(select(.name == "Filial-Angebote") | .subcategories | map(.flyers))
-      | flatten
-      | flatten
-      | .[]
-      | .pdfUrl
-    '
-}
-
-aldi_nord() {
-  echo ALDI nord
-  echo 'https://magazine.aldi-nord.de/aldi-nord/aldi-aktuell/GetPDF.ashx'
-  echo 'https://magazine.aldi-nord.de/aldi-nord/aldi-vorschau/GetPDF.ashx'
-}
-
-rewe_berlin() {(
-  store_id=662366923
-  publisher_id=1062
-
-  echo REWE
-  curl -sSL 'https://www.bonialserviceswidget.de/de/stores/'$store_id'/brochures?storeId='$store_id'&publisherId='$publisher_id | while read -r brochure_id; do
-    curl -sSL 'https://www.bonialserviceswidget.de/de/v5/brochureDetails/'"$brochure_id"'?publisherId='$publisher_id  | jq -r .pdfUrl
-  done
-)}
-
-kaufland() {(
-  region_code=8920
-  echo KAUFLAND
-  curl -sSL https://filiale.kaufland.de/prospekte.html | htmlq --attribute href '.flyer a' | grep -Eo 'DE_de_KDZ[^/]*' | sed "s/_3000_/_${region_code}_/" | while read -r flyer_id; do
-    curl -sSL "https://endpoints.leaflets.kaufland.com/v3/$flyer_id/flyer.json?regionCode=$region_code" | jq -r .flyer.pdfUrl
-  done
-)}
-
-netto_schwarz() {
-  echo 'NETTO (schwarz)'
-  curl -sSL 'https://squid-api.tjek.com/v2/catalogs?dealer_ids=90f2VL&order_by=created' \
-    | jq -r '.[] | .id' \
-    | while read -r flyer_id; do
-      curl -sSL "https://squid-api.tjek.com/v2/catalogs/$flyer_id/download" \
-        | jq -r .pdf_url
-    done
-}
-
-dir="$(mktemp -d)"
-trap clean EXIT
-
-clean() {
-  rm -rf "$dir"
-}
-
-prospekt_url="$( (
-  lidl
-  aldi_nord
-  rewe_berlin
-  kaufland
-  netto_schwarz
-) | fzf)"
-
-curl -sSL "$prospekt_url" -o "$dir/prospekt.pdf"
-zathura "$dir/prospekt.pdf"
diff --git a/.bin/readme b/.bin/readme
deleted file mode 100755
index 6698bf0..0000000
--- a/.bin/readme
+++ /dev/null
@@ -1,4 +0,0 @@
-#!/bin/sh
-curl -sSL "https://raw.githubusercontent.com/$*/master/README.md" \
-  | pandoc -f gfm -t man -s \
-  | man -l -
diff --git a/.bin/unicode b/.bin/unicode
deleted file mode 100644
index 15fd968..0000000
--- a/.bin/unicode
+++ /dev/null
@@ -1,8 +0,0 @@
-import sys
-import unicodedata
-
-for index, character in enumerate(sys.stdin.read().strip()):
-  try:
-    print(index, character, hex(ord(character)), unicodedata.category(character), unicodedata.name(character))
-  except:
-    print(index, character, hex(ord(character)))
diff --git a/flake.nix b/flake.nix
index 969a14b..fbd9f3b 100644
--- a/flake.nix
+++ b/flake.nix
@@ -200,6 +200,22 @@
         niveum-browser = final.niphas-web-browser;
         niveum-filemanager = final.niphas-file-browser;
 
+        # packaged from .bin/
+        two56color = prev.callPackage packages/256color.nix { };
+        avesta = prev.callPackage packages/avesta.nix { };
+        bvg = prev.callPackage packages/bvg.nix { };
+        charinfo = prev.callPackage packages/charinfo.nix { };
+        chunk-pdf = prev.callPackage packages/chunk-pdf.nix { };
+        csv2json = prev.callPackage packages/csv2json.nix { };
+        fix-sd = prev.callPackage packages/fix-sd.nix { };
+        json2csv = prev.callPackage packages/json2csv.nix { };
+        mp3player-write = prev.callPackage packages/mp3player-write.nix { };
+        mushakkil = prev.callPackage packages/mushakkil.nix { };
+        nix-haddock-index = prev.callPackage packages/nix-haddock-index.nix { };
+        pdf-ocr = prev.callPackage packages/pdf-ocr.nix { };
+        prospekte = prev.callPackage packages/prospekte.nix { };
+        readme = prev.callPackage packages/readme.nix { };
+
         ashell = nixpkgs-unstable.legacyPackages.${prev.system}.ashell;
 
         # wrapped from upstream
@@ -546,14 +562,20 @@
             ];
           };
           inherit (pkgs)
+            two56color
+            avesta
             auc
             betacode
             booksplit
             brainmelter
             brassica
+            bvg
+            charinfo
             cheat-sh
+            chunk-pdf
             closest
             cro
+            csv2json
             cyberlocker-tools
             dawn-editor
             default-gateway
@@ -564,6 +586,7 @@
             emailmenu
             exodus
             fkill
+            fix-sd
             fzfmenu
             gfs-fonts
             bring-out-the-gimp
@@ -574,6 +597,7 @@
             image-convert-tolino
             ipa
             jsesh
+            json2csv
             kirciuoklis
             klem
             kpaste
@@ -582,24 +606,30 @@
             mansplain
             manual-sort
             morris
+            mp3player-write
             mpv-iptv
             mpv-radio
             mpv-tuner
             mpv-tv
+            mushakkil
             new-mac
             niveum-ssh
             nix-git
+            nix-haddock-index
             noise-waves
             notemenu
             obsidian-vim
             opustags
+            pdf-ocr
             picoclaw
             pls
             polyglot
+            prospekte
             q
             qrpaste
             radio-news
             random-zeno
+            readme
             rfc
             scanned
             stag
diff --git a/packages/256color.nix b/packages/256color.nix
new file mode 100644
index 0000000..b14a71a
--- /dev/null
+++ b/packages/256color.nix
@@ -0,0 +1,37 @@
+{
+  writers,
+}:
+writers.writeDashBin "256color" ''
+  pl() {
+    for i in $(seq $1 $(expr $2 - 1)); do
+      printf '\e[38;5;%sm%03i\e[m ' $i $i
+    done
+    printf '\e[38;5;%sm%03i\e[m\n' $2 $2
+  }
+
+  p() {
+    printf '\e[38;5;%sm%03i\e[m ' $1 $1
+  }
+
+  p6x6() {
+    for i in $(seq 0 5); do
+      for j in $(seq 0 5); do
+        p $(expr $1 + $i + $j \* 6)
+      done
+      echo
+    done
+  }
+
+  pl 0 7
+  pl 8 15
+
+  p6x6 16
+  p6x6 52
+  p6x6 88
+  p6x6 124
+  p6x6 160
+  p6x6 196
+
+  pl 232 243
+  pl 244 255
+''
diff --git a/packages/avesta.nix b/packages/avesta.nix
new file mode 100644
index 0000000..85ac887
--- /dev/null
+++ b/packages/avesta.nix
@@ -0,0 +1,65 @@
+# Transliterate Latin-script Avestan to Avestan Unicode script
+{
+  writers,
+  gnused,
+}:
+let
+  sedScript = builtins.toFile "avesta.sed" ''
+    s/ā̊/𐬃/g
+    s/t̰/𐬝/g
+    s/ṣ̌/𐬴/g
+    s/š́/𐬳/g
+    s/ą̄/𐬅/g
+    s/ŋᵛ/𐬤/g
+    s/ə̄/𐬇/g
+    s/ŋ́/𐬣/g
+    s/x́/𐬒/g
+    s/xᵛ/𐬓/g
+    s/a/𐬀/g
+    s/ā/𐬁/g
+    s/å/𐬂/g
+    s/ą/𐬄/g
+    s/ə/𐬆/g
+    s/e/𐬈/g
+    s/ē/𐬉/g
+    s/o/𐬊/g
+    s/ō/𐬋/g
+    s/i/𐬌/g
+    s/ī/𐬍/g
+    s/u/𐬎/g
+    s/ū/𐬏/g
+    s/k/𐬐/g
+    s/x/𐬑/g
+    s/g/𐬔/g
+    s/ġ/𐬕/g
+    s/γ/𐬖/g
+    s/c/𐬗/g
+    s/j/𐬘/g
+    s/t/𐬙/g
+    s/θ/𐬚/g
+    s/d/𐬛/g
+    s/δ/𐬜/g
+    s/p/𐬞/g
+    s/f/𐬟/g
+    s/b/𐬠/g
+    s/β/𐬡/g
+    s/ŋ/𐬢/g
+    s/n/𐬥/g
+    s/ń/𐬦/g
+    s/ṇ/𐬧/g
+    s/m/𐬨/g
+    s/m̨/𐬩/g
+    s/ẏ/𐬫/g
+    s/y/𐬪/g
+    s/v/𐬬/g
+    s/r/𐬭/g
+    s/s/𐬯/g
+    s/z/𐬰/g
+    s/š/𐬱/g
+    s/ž/𐬲/g
+    s/h/𐬵/g
+  '';
+in
+writers.writeDashBin "avesta" ''
+  exec ${gnused}/bin/sed -f ${sedScript} "$@"
+''
diff --git a/packages/bvg.nix b/packages/bvg.nix
new file mode 100644
index 0000000..2a73ccf
--- /dev/null
+++ b/packages/bvg.nix
@@ -0,0 +1,53 @@
+# Berlin BVG transit disruption checker
+{
+  writers,
+  curl,
+  jq,
+}:
+writers.writeDashBin "bvg" ''
+  interesting="U6 N6 140 M46 184 N84"
+
+  ${curl}/bin/curl -sSL 'https://www.bvg.de/disruption-reports/q' \
+    --data-raw '{"variables":{},"query":"{
+      allDisruptions {
+        disruptions {
+          meldungsId
+          linie
+          verkehrsmittel
+          __typename
+          ... on Traffic {
+            datum
+            gueltigVonDatum
+            gueltigVonZeit
+            gueltigBisDatum
+            gueltigBisZeit
+            richtungName
+            richtungHafasId
+            beginnAbschnittName
+            beginnAbschnittHafasId
+            endeAbschnittName
+            endeAbschnittHafasId
+            textIntUrsache
+            sev
+            textIntAuswirkung
+            umfahrung
+            textWAPSMSUrsache
+            textWAPSMSAuswirkung
+            prioritaet
+            __typename
+          }
+        }
+        __typename
+      }
+    }"}' \
+    | ${jq}/bin/jq --arg interesting "$interesting" '
+      .data.allDisruptions.disruptions
+      | map(select(
+        (.linie as $linie
+        | $interesting
+        | split(" ")
+        | index($linie))
+        and (.["__typename"] == "Traffic")
+      ))
+    '
+''
diff --git a/packages/charinfo.nix b/packages/charinfo.nix
new file mode 100644
index 0000000..fe17f83
--- /dev/null
+++ b/packages/charinfo.nix
@@ -0,0 +1,17 @@
+# Print Unicode character info for each character on stdin
+{
+  writers,
+  python3,
+}:
+writers.writePython3Bin "charinfo" {
+  flakeIgnore = [ "E501" "E722" ];
+} ''
+  import sys
+  import unicodedata
+
+  for index, character in enumerate(sys.stdin.read().strip()):
+      try:
+          print(index, character, hex(ord(character)), unicodedata.category(character), unicodedata.name(character))
+      except Exception:
+          print(index, character, hex(ord(character)))
+''
diff --git a/packages/chunk-pdf.nix b/packages/chunk-pdf.nix
new file mode 100644
index 0000000..3c951ce
--- /dev/null
+++ b/packages/chunk-pdf.nix
@@ -0,0 +1,30 @@
+# Split a PDF into chunks of N pages
+{
+  writers,
+  pdftk,
+  gnugrep,
+  coreutils,
+}:
+writers.writeDashBin "chunk-pdf" ''
+  set -efu
+
+  INPUT_FILE="''${2:?Pass the PDF path as second argument.}"
+  PAGES_PER_REPORT="''${1:?Pass the chunk size as first argument.}"
+
+  if [ ! -f "$INPUT_FILE" ]; then
+    echo >&2 "File $INPUT_FILE does not exist."
+    exit 1
+  fi
+
+  TOTAL_PAGES="$(${pdftk}/bin/pdftk "$INPUT_FILE" dump_data | ${gnugrep}/bin/grep NumberOfPages | ${coreutils}/bin/cut -f2 -d' ')"
+
+  RUNS=$((TOTAL_PAGES/PAGES_PER_REPORT))
+
+  for run in $(${coreutils}/bin/seq 0 "$((RUNS-1))"); do
+    start_page=$((run*PAGES_PER_REPORT+1))
+    end_page=$(((run+1)*PAGES_PER_REPORT))
+    output_file="chunk_$((run+1)).pdf"
+    echo "splitting $INPUT_FILE from $start_page to $end_page into $output_file"
+    ${pdftk}/bin/pdftk "$INPUT_FILE" cat "$start_page-$end_page" output "$output_file"
+  done
+''
diff --git a/packages/csv2json.nix b/packages/csv2json.nix
new file mode 100644
index 0000000..c5afbc9
--- /dev/null
+++ b/packages/csv2json.nix
@@ -0,0 +1,21 @@
+# Convert CSV to JSON
+{
+  writers,
+  python3,
+}:
+writers.writePython3Bin "csv2json" {
+  flakeIgnore = [ "E501" ];
+} ''
+  import csv
+  import json
+  import sys
+  import argparse
+
+  parser = argparse.ArgumentParser()
+  parser.add_argument("--delimiter", "-d", default=",", help="CSV field separator")
+
+  args = parser.parse_args()
+
+  if __name__ == "__main__":
+      json.dump(list(csv.DictReader(sys.stdin, delimiter=args.delimiter)), sys.stdout)
+''
diff --git a/packages/fix-sd.nix b/packages/fix-sd.nix
new file mode 100644
index 0000000..eaf6b98
--- /dev/null
+++ b/packages/fix-sd.nix
@@ -0,0 +1,34 @@
+# Recover files from a corrupted exFAT SD card
+{
+  writers,
+  exfatprogs,
+  util-linux,
+  coreutils,
+  findutils,
+  gnused,
+}:
+writers.writeDashBin "fix-sd" ''
+  set -efu
+
+  drive="''${1:?Usage: fix-sd /dev/sdX [output-dir]}"
+  output_dir="''${2:-$(${coreutils}/bin/mktemp -d "''${TMPDIR:-/tmp}/fix-sd-XXXXXX")}"
+  mountpoint="$(${coreutils}/bin/mktemp -d "''${TMPDIR:-/tmp}/fix-sd-mount-XXXXXX")"
+
+  trap clean EXIT
+  clean() {
+    ${util-linux}/bin/umount "$mountpoint" 2>/dev/null || true
+    ${coreutils}/bin/rmdir "$mountpoint" 2>/dev/null || true
+  }
+
+  filenames="$(${exfatprogs}/bin/fsck.exfat "$drive" 2>&1 | ${gnused}/bin/sed -nE "s/.* file '(.*?)' is not allocated.*/\1/p")"
+  ${coreutils}/bin/mkdir -p "$mountpoint" "$output_dir"
+  ${util-linux}/bin/mount "$drive" "$mountpoint"
+
+  echo "$filenames" | while read -r filename; do
+    [ -n "$filename" ] || continue
+    ${findutils}/bin/find "$mountpoint" -type f -name "$filename" -exec ${coreutils}/bin/cp {} "$output_dir" \;
+  done
+
+  echo "Recovered files saved to $output_dir"
+  ${exfatprogs}/bin/fsck.exfat "$drive"
+''
diff --git a/packages/json2csv.nix b/packages/json2csv.nix
new file mode 100644
index 0000000..873fa6c
--- /dev/null
+++ b/packages/json2csv.nix
@@ -0,0 +1,32 @@
+# Convert JSON array of objects to CSV
+{
+  writers,
+  python3,
+}:
+writers.writePython3Bin "json2csv" {
+  flakeIgnore = [ "E501" ];
+} ''
+  import csv
+  import json
+  import sys
+
+  if __name__ == "__main__":
+      json_list = json.load(sys.stdin)
+      if not isinstance(json_list, list):
+          print("JSON object is not a list.", file=sys.stderr)
+          sys.exit(1)
+      if len(json_list) == 0:
+          print("JSON list is empty.", file=sys.stderr)
+          sys.exit(1)
+      keys = set()
+      for element in json_list:
+          if isinstance(element, dict):
+              keys |= element.keys()
+          else:
+              print("Non-dict element:", element, file=sys.stderr)
+              sys.exit(1)
+      writer = csv.DictWriter(sys.stdout, fieldnames=list(keys))
+      writer.writeheader()
+      for element in json_list:
+          writer.writerow(element)
+''
diff --git a/packages/mp3player-write.nix b/packages/mp3player-write.nix
new file mode 100644
index 0000000..97108d2
--- /dev/null
+++ b/packages/mp3player-write.nix
@@ -0,0 +1,89 @@
+# Convert and transfer audio files to an MP3 player
+{
+  writers,
+  ffmpeg,
+  coreutils,
+  gnugrep,
+  bash,
+}:
+writers.writeBashBin "mp3player-write" ''
+  set -e
+
+  SPEED=1.0
+
+  while getopts ":s:" opt; do
+    case $opt in
+      s) SPEED=$OPTARG ;;
+      \?) echo "Invalid option: -$OPTARG" >&2; exit 1 ;;
+      :) echo "Option -$OPTARG requires a value." >&2; exit 1 ;;
+    esac
+  done
+  shift $((OPTIND -1))
+
+  if [ "$#" -lt 2 ]; then
+    echo "Usage: mp3player-write [-s speed] MOUNT_POINT FILE1 [FILE2 ...]"
+    exit 1
+  fi
+
+  MOUNT_POINT=$1
+  shift
+  FILES=("$@")
+
+  if [ ! -d "$MOUNT_POINT" ]; then
+    echo "Error: Mount point '$MOUNT_POINT' does not exist."
+    exit 1
+  fi
+
+  TOTAL_SIZE=0
+  for f in "''${FILES[@]}"; do
+    if [ ! -f "$f" ]; then
+      echo "Warning: File '$f' does not exist, skipping."
+      continue
+    fi
+    FILE_SIZE=$(${coreutils}/bin/stat --printf="%s" "$f")
+    TOTAL_SIZE=$((TOTAL_SIZE + FILE_SIZE / 2))
+  done
+
+  AVAILABLE=$(${coreutils}/bin/df --output=avail "$MOUNT_POINT" | ${coreutils}/bin/tail -n 1)
+  AVAILABLE=$((AVAILABLE * 1024))
+
+  if [ "$TOTAL_SIZE" -gt "$AVAILABLE" ]; then
+    echo "Error: Not enough space. Required: $TOTAL_SIZE bytes, Available: $AVAILABLE bytes"
+    exit 1
+  fi
+
+  echo "Enough space available. Starting conversion..."
+
+  sanitize_filename() {
+    local name
+    name=$(${coreutils}/bin/basename "$1")
+    name=''${name%.*}
+    name=$(echo "$name" | ${coreutils}/bin/tr ' ' '_' | ${coreutils}/bin/tr -cd '[:alnum:]_-')
+    echo "''${name:0:50}"
+  }
+
+  for f in "''${FILES[@]}"; do
+    [ -f "$f" ] || continue
+
+    existing_prefixes=$(${coreutils}/bin/ls "$MOUNT_POINT" | ${gnugrep}/bin/grep -E '^[0-9].*\.mp3$' | ${coreutils}/bin/sed -E 's/^([0-9]).*/\1/' | ${coreutils}/bin/sort -n | ${coreutils}/bin/uniq)
+    for i in {0..9}; do
+      if ! echo "$existing_prefixes" | ${gnugrep}/bin/grep -q "^$i$"; then
+        PREFIX=$i
+        break
+      fi
+    done
+
+    BASENAME=$(sanitize_filename "$f")
+    OUT_PATTERN="$MOUNT_POINT/''${PREFIX}_%03d_''${BASENAME}.mp3"
+
+    echo "Converting '$f' to '$OUT_PATTERN' at speed $SPEED..."
+
+    ${ffmpeg}/bin/ffmpeg -nostdin -i "$f" \
+      -filter:a "atempo=$SPEED" \
+      -ar 22050 -ac 1 -c:a libmp3lame -b:a 32k \
+      -f segment -segment_time 300 \
+      "$OUT_PATTERN"
+  done
+
+  echo "All files processed successfully."
+''
diff --git a/packages/mushakkil.nix b/packages/mushakkil.nix
new file mode 100644
index 0000000..0c53d61
--- /dev/null
+++ b/packages/mushakkil.nix
@@ -0,0 +1,13 @@
+# Add Arabic diacritics (tashkeel) to text via alsharekh.org
+{
+  writers,
+  curl,
+  jq,
+}:
+writers.writeDashBin "mushakkil" ''
+  ${curl}/bin/curl -sSL 'https://diac.alsharekh.org/Diac/DiacText' \
+    -H "Content-Type: application/json" \
+    --data-raw "$(${jq}/bin/jq --raw-input '{word: ., type: 1}')" \
+    --compressed \
+    | ${jq}/bin/jq -r .diacWord
+''
diff --git a/packages/nix-haddock-index.nix b/packages/nix-haddock-index.nix
new file mode 100644
index 0000000..98c562e
--- /dev/null
+++ b/packages/nix-haddock-index.nix
@@ -0,0 +1,84 @@
+# Generate a Haddock index page for all packages visible to the current GHC
+{
+  writers,
+  coreutils,
+  gnugrep,
+  gnused,
+  graphviz,
+  bash,
+}:
+writers.writeBashBin "nix-haddock-index" ''
+  set -efux
+
+  if test -z "''${NIX_GHC-}"; then
+    NIX_GHC=$(${coreutils}/bin/readlink -f "$(type -P ghc)")
+  fi
+
+  if ! echo $NIX_GHC | ${gnugrep}/bin/grep -q '^/nix/store/'; then
+    printf '%s: error: unsupported GHC executable path (not in Nix store): %q\n' \
+        "$0" \
+        "$NIX_GHC" \
+      >&2
+    exit 1
+  fi
+
+  NIX_GHC_PREFIX=$(${coreutils}/bin/dirname "$(${coreutils}/bin/dirname "$NIX_GHC")")
+  NIX_GHC_DOCDIR=$NIX_GHC_PREFIX/share/doc/ghc/html
+
+  main() {
+    hash=$(echo $NIX_GHC_PREFIX | ${gnused}/bin/sed -n 's|^/nix/store/\([a-z0-9]\+\).*|\1|p')
+    title="Haddock index for $NIX_GHC_PREFIX"
+
+    header=$(
+      printf 'Haddock index for <a href="%s">%s</a>\n' \
+          $NIX_GHC_PREFIX \
+          $NIX_GHC_PREFIX \
+    )
+
+    suffix=''${hash:+-$hash}
+    index_file=/tmp/haddock$suffix-index.html
+    svg_file=/tmp/haddock$suffix.svg
+
+    eval "$(
+      echo 'gen_index() {'
+      echo '  html_head'
+      "$NIX_GHC_PREFIX"/bin/ghc-pkg dump | ${gnused}/bin/sed -n '
+        s/^---$/  reset/p
+        s/^\(name\|version\):\s*\([-A-Za-z0-9_.]\+\)$/  \1=\2/p
+        s/^haddock-html:\s*\([-A-Za-z0-9_./]\+\)$/  haddock_html \1/p
+      '
+      echo '  html_foot'
+      echo '}'
+    )"
+
+    gen_index > $index_file
+
+    "$NIX_GHC_PREFIX"/bin/ghc-pkg dot | ${graphviz}/bin/tred | ${graphviz}/bin/dot -Tsvg | ${gnused}/bin/sed '
+      s/<svg width="[0-9]\+pt" height="[0-9]\+pt"/<svg width="3600px" height="100%"/
+    ' > $svg_file
+
+    echo $index_file
+  }
+  reset() {
+    unset name version
+  }
+  haddock_html() {
+    printf '<li>'
+    printf '<a href="%s/index.html">%s</a>' "$1" "$name-$version"
+    printf '</li>\n'
+  }
+  html_head() {
+    printf '<!doctype html>\n'
+    printf '<title>%s</title>\n' "$title"
+    printf '<link href="%s" rel="stylesheet" type="text/css">\n' \
+        "$NIX_GHC_DOCDIR/libraries/ocean.css"
+    printf '<h1>%s</h1>\n' "$header"
+    printf '<ul>\n'
+  }
+  html_foot() {
+    printf '</ul>\n'
+    printf '<a href="%s">graph</a>\n' "$svg_file"
+  }
+
+  main "$@"
+''
diff --git a/packages/pdf-ocr.nix b/packages/pdf-ocr.nix
new file mode 100644
index 0000000..d6448f8
--- /dev/null
+++ b/packages/pdf-ocr.nix
@@ -0,0 +1,29 @@
+# OCR a PDF file to text using tesseract
+{
+  writers,
+  poppler_utils,
+  tesseract,
+  coreutils,
+}:
+writers.writeDashBin "pdf-ocr" ''
+  set -efu
+
+  pdf_path="$(${coreutils}/bin/realpath "$1")"
+
+  [ -f "$pdf_path" ] || {
+    echo "Usage: pdf-ocr FILE.pdf" >&2
+    exit 1
+  }
+
+  tmpdir="$(${coreutils}/bin/mktemp -d)"
+  trap 'rm -rf $tmpdir' EXIT
+
+  cd "$tmpdir"
+
+  ${poppler_utils}/bin/pdftoppm -png "$pdf_path" pdf-ocr
+  for png in pdf-ocr*.png; do
+    ${tesseract}/bin/tesseract "$png" "$png.txt" 2>/dev/null
+  done
+
+  cat pdf-ocr-*.txt
+''
diff --git a/packages/prospekte.nix b/packages/prospekte.nix
new file mode 100644
index 0000000..e45019f
--- /dev/null
+++ b/packages/prospekte.nix
@@ -0,0 +1,77 @@
+# Browse and view German supermarket flyers (Lidl, Aldi, REWE, Kaufland, Netto)
+{
+  writers,
+  curl,
+  jq,
+  fzf,
+  zathura,
+  coreutils,
+  htmlq,
+  gnugrep,
+  gnused,
+  lib,
+}:
+writers.writeDashBin "prospekte" ''
+  export PATH=${lib.makeBinPath [ curl jq fzf zathura coreutils htmlq gnugrep gnused ]}:$PATH
+
+  lidl() {
+    echo LIDL
+    curl -sSL 'https://endpoints.lidl-flyer.com/v3/region-overview/lidl/de-DE/0.json' \
+      | jq -r '
+        .categories
+        | map(select(.name == "Filial-Angebote") | .subcategories | map(.flyers))
+        | flatten
+        | flatten
+        | .[]
+        | .pdfUrl
+      '
+  }
+
+  aldi_nord() {
+    echo ALDI nord
+    echo 'https://magazine.aldi-nord.de/aldi-nord/aldi-aktuell/GetPDF.ashx'
+    echo 'https://magazine.aldi-nord.de/aldi-nord/aldi-vorschau/GetPDF.ashx'
+  }
+
+  rewe_berlin() {
+    store_id=662366923
+    publisher_id=1062
+
+    echo REWE
+    curl -sSL "https://www.bonialserviceswidget.de/de/stores/$store_id/brochures?storeId=$store_id&publisherId=$publisher_id" | while read -r brochure_id; do
+      curl -sSL "https://www.bonialserviceswidget.de/de/v5/brochureDetails/$brochure_id?publisherId=$publisher_id" | jq -r .pdfUrl
+    done
+  }
+
+  kaufland() {
+    region_code=8920
+    echo KAUFLAND
+    curl -sSL https://filiale.kaufland.de/prospekte.html | htmlq --attribute href '.flyer a' | grep -Eo 'DE_de_KDZ[^/]*' | sed "s/_3000_/_''${region_code}_/" | while read -r flyer_id; do
+      curl -sSL "https://endpoints.leaflets.kaufland.com/v3/$flyer_id/flyer.json?regionCode=$region_code" | jq -r .flyer.pdfUrl
+    done
+  }
+
+  netto_schwarz() {
+    echo 'NETTO (schwarz)'
+    curl -sSL 'https://squid-api.tjek.com/v2/catalogs?dealer_ids=90f2VL&order_by=created' \
+      | jq -r '.[] | .id' \
+      | while read -r flyer_id; do
+        curl -sSL "https://squid-api.tjek.com/v2/catalogs/$flyer_id/download" \
+          | jq -r .pdf_url
+      done
+  }
+
+  dir="$(mktemp -d)"
+  trap 'rm -rf "$dir"' EXIT
+
+  prospekt_url="$( (
+    lidl
+    aldi_nord
+    rewe_berlin
+    kaufland
+    netto_schwarz
+  ) | fzf)"
+
+  curl -sSL "$prospekt_url" -o "$dir/prospekt.pdf"
+  zathura "$dir/prospekt.pdf"
+''
diff --git a/packages/readme.nix b/packages/readme.nix
new file mode 100644
index 0000000..b69ac46
--- /dev/null
+++ b/packages/readme.nix
@@ -0,0 +1,12 @@
+# Render a GitHub repo's README.md as a man page
+{
+  writers,
+  curl,
+  pandoc,
+  man,
+}:
+writers.writeDashBin "readme" ''
+  ${curl}/bin/curl -sSL "https://raw.githubusercontent.com/$*/master/README.md" \
+    | ${pandoc}/bin/pandoc -f gfm -t man -s \
+    | ${man}/bin/man -l -
+''