2 files changed, 158 insertions, 5 deletions
diff --git a/krebs/5pkgs/simple/krebsdance/default.nix b/krebs/5pkgs/simple/krebsdance/default.nix
new file mode 100644
index 000000000..cdfe23ef2
--- /dev/null
+++ b/krebs/5pkgs/simple/krebsdance/default.nix
@@ -0,0 +1,157 @@
+{ writers }:
+writers.writePython3Bin "krebsdance" { flakeIgnore = [ "E501" ]; } ''
+  import argparse
+  import random
+  import itertools
+
+  claws = [
+      dict(
+          up="(\\/)",
+          down="(/\\)",
+          left="(\\\\)",
+          right="(//)",
+      ),
+      dict(
+          up="(V)",
+          down="(A)",
+          left=">)=",
+          right="=(<",
+      ),
+      dict(
+          up="(U)",
+          down="(n)",
+          left=")==",
+          right="==(",
+      ),
+  ]
+
+  eyes = [
+      "°",
+      "*",
+      "^",
+      "ö",
+      "o",
+      "O",
+      "X",
+      "x",
+      "U",
+      "u",
+  ]
+
+  bodies = [
+      dict(
+          left="(",
+          right=")",
+      ),
+      dict(
+          left="{",
+          right="}",
+      ),
+      dict(
+          left="[",
+          right="]",
+      ),
+      dict(
+          left="<",
+          right=">",
+      ),
+      dict(
+          left="|",
+          right="|",
+      ),
+  ]
+
+  mouths = [
+      ",,,,",
+      ",mm,",
+      "_mm_",
+      "-mm-",
+      ";;;;",
+      ";mm;",
+      ":mm:",
+      "::::",
+      ":ww:",
+      ":<>:",
+  ]
+
+
+  def all_krebses():
+      for mouth, body, eye, claw in itertools.product(mouths, bodies, eyes, claws):
+          yield f'{claw["up"]} {body["left"]}{eye}{mouth}{eye}{body["right"]} {claw["up"]}'
+
+
+  def escape_graph(text):
+      return text.replace("\\", "\\\\")
+
+
+  def krebs_graph() -> str:
+      return "\n".join(itertools.chain(
+          ["digraph {"],
+          [escape_graph(f'"{krebs}"->"{generate(seed=krebs)}"') for krebs in all_krebses()],
+          "}",
+      ))
+
+
+  def generate(*, seed: str, dancing: bool = False) -> str:
+      if seed:
+          random.seed(seed)
+      clawstyle = random.choice(claws)
+      body = random.choice(bodies)
+      eye = random.choice(eyes)
+      mouth = random.choice(mouths)
+      if dancing:
+          return "\n".join(
+              [
+                  f'{clawstyle["down"]} {body["left"]}{eye}{mouth}{eye}{body["right"]}{clawstyle["up"]}',
+                  f'{clawstyle["left"]}{body["left"]}{eye}{mouth}{eye}{body["right"]} {clawstyle["right"]}',
+                  f'{clawstyle["right"]} {body["left"]}{eye}{mouth}{eye}{body["right"]} {clawstyle["left"]}',
+                  f'{clawstyle["down"]}{body["left"]}{eye}{mouth}{eye}{body["right"]}{clawstyle["down"]}',
+              ]
+          )
+      else:
+          return f'{clawstyle["up"]} {body["left"]}{eye}{mouth}{eye}{body["right"]} {clawstyle["up"]}'
+
+
+  def fixpoints():
+      for krebs in all_krebses():
+          if generate(seed=krebs) == krebs:
+              yield krebs
+
+
+  def main():
+      parser = argparse.ArgumentParser()
+
+      parser.add_argument(
+          "seed",
+          nargs="?",
+          help="random seed to use for generating the krebs variant",
+      )
+
+      parser.add_argument(
+          "--dance",
+          "-d",
+          dest="dance",
+          help="if the krebs should dance",
+          default=False,
+          action="store_true",
+      )
+
+      parser.add_argument(
+          "--mode",
+          "-m",
+          dest="mode",
+          choices=["graphviz", "plain"],
+          default="plain",
+      )
+
+      args = parser.parse_args()
+
+      if args.mode == "plain":
+          print(generate(seed=args.seed, dancing=args.dance))
+      elif args.mode == "graphviz":
+          print(krebs_graph())
+
+
+  if __name__ == "__main__":
+      main()
+''
diff --git a/krebs/5pkgs/simple/reaktor2-plugins.nix b/krebs/5pkgs/simple/reaktor2-plugins.nix
index 54aaf246a..052e389a6 100644
--- a/krebs/5pkgs/simple/reaktor2-plugins.nix
+++ b/krebs/5pkgs/simple/reaktor2-plugins.nix
@@ -23,11 +23,7 @@ rec {
 
     dance = {
       filename = pkgs.writeDash "dance" ''
-        echo "<(^.^<)"
-        echo "<(^.^)>"
-        echo "(>^.^)>"
-        echo "(7^.^)7"
-        echo "(>^.^<)"
+        ${pkgs.krebsdance}/bin/krebsdance --dance "$@";
       '';
     };