diff --git a/pkgs/by-name/in/influxdb/package.nix b/pkgs/by-name/in/influxdb/package.nix
index 01ffe864b954..39dc91028bde 100644
--- a/pkgs/by-name/in/influxdb/package.nix
+++ b/pkgs/by-name/in/influxdb/package.nix
@@ -44,16 +44,18 @@ let
       Cflags: -I/out/include
       Libs: -L/out/lib -lflux -lpthread
     '';
-    passAsFile = [ "pkgcfg" ];
     postInstall = ''
       mkdir -p $out/include $out/pkgconfig
       cp -r $NIX_BUILD_TOP/source/libflux/include/influxdata $out/include
-      substitute $pkgcfgPath $out/pkgconfig/flux.pc \
+      printf "%s" "$pkgcfg" > $out/pkgconfig/flux.pc
+      substituteInPlace $out/pkgconfig/flux.pc \
         --replace-fail /out $out
     ''
     + lib.optionalString stdenv.hostPlatform.isDarwin ''
       install_name_tool -id $out/lib/libflux.dylib $out/lib/libflux.dylib
     '';
+
+    __structuredAttrs = true;
   };
 in
 buildGoModule rec {