mkBinaryCache: support different compression methods: xz (default), zstd, none

doc/build-helpers/images/binarycache.section.md

@@ -11,6 +11,14 @@ It can also be a convenient way to make some Nix packages available inside a con
 `rootPaths` must be a list of derivations.
 The transitive closure of these derivations' outputs will be copied into the cache.
 
+## Optional arguments {#sec-pkgs-binary-cache-arguments}
+
+`compression` (`"none"` or `"xz"` or `"zstd"`; _optional_)
+
+: The compression algorithm to use.
+
+  _Default value:_ `zstd`.
+
 ::: {.note}
 This function is meant for advanced use cases.
 The more idiomatic way to work with flat-file binary caches is via the [nix-copy-closure](https://nixos.org/manual/nix/stable/command-ref/nix-copy-closure.html) command.

doc/redirects.json

@@ -1959,6 +1959,9 @@
   "sec-pkgs-binary-cache": [
     "index.html#sec-pkgs-binary-cache"
   ],
+  "sec-pkgs-binary-cache-arguments": [
+    "index.html#sec-pkgs-binary-cache-arguments"
+  ],
   "sec-pkgs-binary-cache-example": [
     "index.html#sec-pkgs-binary-cache-example"
   ],