nix: add postgrest-profiled-run (#3292)

nix/tools/cabalTools.nix

@@ -42,7 +42,7 @@ let
           [
             "ARG_USE_ENV([PGRST_DB_ANON_ROLE], [postgrest_test_anonymous], [PostgREST anonymous role])"
             "ARG_USE_ENV([PGRST_DB_POOL], [1], [PostgREST pool size])"
-            "ARG_USE_ENV([PGRST_DB_POOL_ACQUISITION_TIMEOUT], [1], [PostgREST pool size])"
+            "ARG_USE_ENV([PGRST_DB_POOL_ACQUISITION_TIMEOUT], [1], [PostgREST pool timeout])"
             "ARG_LEFTOVERS([PostgREST arguments])"
           ];
         workingDir = "/";

nix/tools/memory.nix

@@ -1,6 +1,7 @@
 # The memory tests have large dependencies (a profiled build of PostgREST)
 # and are run less often than the spec tests, so we don't include them in
 # the default test environment. We make them available through a separate module.
+# TODO both of these require reentering the nix-shell if you make a change to the code
 { buildToolbox
 , checkedShellScript
 , curl
@@ -20,9 +21,31 @@ let
         ${withTools.withPg} -f test/spec/fixtures/load.sql test/memory/memory-tests.sh
       '';
 
+  runProfiled =
+    checkedShellScript
+      {
+        name = "postgrest-profiled-run";
+        docs = "Run a profiled build of postgREST. This will generate a postgrest.prof file that can be used to do optimization. Note: if you make a change to the code, you must reenter the nix-shell for an updated profiled build.";
+        args =
+          [
+            "ARG_USE_ENV([PGRST_DB_ANON_ROLE], [postgrest_test_anonymous], [PostgREST anonymous role])"
+            "ARG_USE_ENV([PGRST_DB_POOL], [1], [PostgREST pool size])"
+            "ARG_USE_ENV([PGRST_DB_POOL_ACQUISITION_TIMEOUT], [1], [PostgREST pool timeout])"
+            "ARG_LEFTOVERS([PostgREST arguments])"
+          ];
+        workingDir = "/";
+        withPath = [ postgrestProfiled ];
+      }
+      ''
+        export PGRST_DB_ANON_ROLE
+        export PGRST_DB_POOL
+        export PGRST_DB_POOL_ACQUISITION_TIMEOUT
+
+        postgrest +RTS -p -h -RTS "''${_arg_leftovers[@]}"
+      '';
 in
 buildToolbox
 {
   name = "postgrest-memory";
-  tools = { inherit test; };
+  tools = { inherit test runProfiled; };
 }