chore: drop conda from the Linux and macOS profiles

Assisted-by: DeepSeek Harness 0.2.0-rc.2 (deepseek-flash)

home/darwin/shell.nix

@@ -3,24 +3,6 @@ let
   envExtra = ''
     export PATH="/opt/homebrew/bin:/usr/local/bin:$PATH"
   '';
-  # copied from the content generated by `conda init bash`
-  initContent = ''
-    arch=$(uname -m)
-
-    if [ "aarch64" = "$arch" ] ||  [ "arm64" = "$arch" ]; then
-      # >>> (miniforge)conda initialize >>>
-      # !! Contents within this block are managed by 'conda init' !!
-      if [ -f "/opt/homebrew/Caskroom/miniforge/base/etc/profile.d/conda.sh" ]; then
-          . "/opt/homebrew/Caskroom/miniforge/base/etc/profile.d/conda.sh"
-      else
-          export PATH="/opt/homebrew/Caskroom/miniforge/base/bin:$PATH"
-      fi
-      # <<< conda initialize <<<
-    elif [[ "x86_64" = "$arch" ]]; then
-      # do nothing
-      true
-    fi
-  '';
 in
 {
   # Homebrew's default install location:
@@ -30,11 +12,11 @@ in
   # in /opt/homebrew for Apple Silicon and /usr/local for Rosetta 2 to coexist and use bottles.
   programs.bash = {
     enable = true;
-    bashrcExtra = lib.mkAfter (envExtra + initContent);
+    bashrcExtra = lib.mkAfter envExtra;
   };
   programs.zsh = {
     enable = true;
     dotDir = "${config.xdg.configHome}/zsh";
-    inherit envExtra initContent;
+    inherit envExtra;
   };
 }