python3Packages.polars: fix the mimalloc flag (NixOS#486282)

happysalada · web-flow · commit 44db59d280be · 2026-02-06T22:19:33.000Z
diff --git a/pkgs/development/python-modules/polars/default.nix b/pkgs/development/python-modules/polars/default.nix
@@ -97,7 +97,7 @@ buildPythonPackage rec {
 
     RUSTFLAGS = lib.concatStringsSep " " (
       lib.optionals (polarsMemoryAllocator.pname == "mimalloc") [
-        "--cfg use_mimalloc"
+        "--cfg allocator=\"mimalloc\""
       ]
     );
     RUST_BACKTRACE = true;

Original file line number	Diff line number	Diff line change
`@@ -97,7 +97,7 @@ buildPythonPackage rec {`
`97`	`97`
`98`	`98`	`RUSTFLAGS = lib.concatStringsSep " " (`
`99`	`99`	`lib.optionals (polarsMemoryAllocator.pname == "mimalloc") [`
`100`		`- "--cfg use_mimalloc"`
	`100`	`+ "--cfg allocator=\"mimalloc\""`
`101`	`101`	`]`
`102`	`102`	`);`
`103`	`103`	`RUST_BACKTRACE = true;`