nix: remove jemalloc (now default) targets, add jq input for default

jq input change was from 17eb354590
to prevent unnecessary bindgen rebuilds

Signed-off-by: strawberry <strawberry@puppygock.gay>

nix/pkgs/main/default.nix

@@ -1,6 +1,7 @@
 # Dependencies (keep sorted)
 { craneLib
 , inputs
+, jq
 , lib
 , libiconv
 , liburing
@@ -87,6 +88,9 @@ buildDepsOnlyEnv =
     });
   in
   {
+    # https://crane.dev/faq/rebuilds-bindgen.html
+    NIX_OUTPATH_USED_AS_RANDOM_SEED = "aaaaaaaaaa";
+
     CARGO_PROFILE = profile;
     ROCKSDB_INCLUDE_DIR = "${rocksdb'}/include";
     ROCKSDB_LIB_DIR = "${rocksdb'}/lib";
@@ -146,6 +150,12 @@ commonAttrs = {
       # weirdness", pkgs.rustPlatform.bindgenHook on its own doesn't quite do the
       # right thing here.
       pkgsBuildHost.rustPlatform.bindgenHook
+
+      # We don't actually depend on `jq`, but crane's `buildPackage` does, but
+      # its `buildDepsOnly` doesn't. This causes those two derivations to have
+      # differing values for `NIX_CFLAGS_COMPILE`, which contributes to spurious
+      # rebuilds of bindgen and its depedents.
+      jq
   ]
   ++ lib.optionals stdenv.isDarwin [
       # https://github.com/NixOS/nixpkgs/issues/206242
@@ -173,9 +183,6 @@ craneLib.buildPackage ( commonAttrs // {
   cargoCheckCommand = "";
   doCheck = false;
 
-  # https://crane.dev/faq/rebuilds-bindgen.html
-  NIX_OUTPATH_USED_AS_RANDOM_SEED = "aaaaaaaaaa";
-
   env = buildPackageEnv;
 
   passthru = {