chore(users/Profpatsch/htmx-experiment): move to Multipart2

We don’t strictly need servant-multipart, if all we need is to parse
some multipart forms. This removes some deps.

Change-Id: I218731fada056b9edfb3d01fc33880673d14473e
Reviewed-on: https://cl.tvl.fyi/c/depot/+/9187
Tested-by: BuildkiteCI
Reviewed-by: Profpatsch <mail@profpatsch.de>

users/Profpatsch/htmx-experiment/default.nix

@@ -9,18 +9,17 @@ let
       ./htmx-experiment.cabal
       ./Main.hs
       ./src/HtmxExperiment.hs
-      ./src/Multipart.hs
       ./src/ServerErrors.hs
       ./src/ValidationParseT.hs
     ];
 
     libraryHaskellDepends = [
+      depot.users.Profpatsch.my-webstuff
       pkgs.haskellPackages.pa-label
       pkgs.haskellPackages.pa-error-tree
       pkgs.haskellPackages.blaze-html
       pkgs.haskellPackages.blaze-markup
       pkgs.haskellPackages.bytestring
-      pkgs.haskellPackages.conduit
       pkgs.haskellPackages.dlist
       pkgs.haskellPackages.http-types
       pkgs.haskellPackages.ihp-hsx
@@ -29,13 +28,9 @@ let
       pkgs.haskellPackages.pa-field-parser
       pkgs.haskellPackages.pa-label
       pkgs.haskellPackages.pa-prelude
-      pkgs.haskellPackages.profunctors
       pkgs.haskellPackages.selective
-      pkgs.haskellPackages.servant-multipart-api
-      pkgs.haskellPackages.servant-multipart
       pkgs.haskellPackages.text
       pkgs.haskellPackages.unliftio
-      pkgs.haskellPackages.wai-extra
       pkgs.haskellPackages.wai
       pkgs.haskellPackages.warp