diff --git a/modules/programs/direnv.nix b/modules/programs/direnv.nix
index bfac5333..e4c17239 100644
--- a/modules/programs/direnv.nix
+++ b/modules/programs/direnv.nix
@@ -6,11 +6,17 @@ let
 
   cfg = config.programs.direnv;
   configFile = config:
-    pkgs.runCommand "config.toml" { buildInputs = [ pkgs.remarshal ]; } ''
-      remarshal -if json -of toml \
-        < ${pkgs.writeText "config.json" (builtins.toJSON config)} \
-        > $out
-    '';
+    pkgs.runCommand "config.toml"
+      {
+         buildInputs = [ pkgs.remarshal ];
+         preferLocalBuild = true;
+         allowSubstitutes = false;
+      }
+      ''
+        remarshal -if json -of toml \
+          < ${pkgs.writeText "config.json" (builtins.toJSON config)} \
+          > $out
+      '';
 
 in
 
diff --git a/modules/programs/obs-studio.nix b/modules/programs/obs-studio.nix
index 9f9310c9..f0dfecb6 100644
--- a/modules/programs/obs-studio.nix
+++ b/modules/programs/obs-studio.nix
@@ -12,13 +12,18 @@ let
       pluginDirs = map (pkg: "${pkg}/share/obs/obs-plugins") packages;
       plugins = concatMapStringsSep " " (p: "${p}/*") pluginDirs;
     in
-      pkgs.runCommand "obs-studio-plugins" {} ''
-        mkdir $out
-        [[ '${plugins}' ]] || exit 0
-        for plugin in ${plugins}; do
-          ln -s "$plugin" $out/
-        done
-      '';
+      pkgs.runCommand "obs-studio-plugins"
+        {
+          preferLocalBuild = true;
+          allowSubstitutes = false;
+        }
+        ''
+          mkdir $out
+          [[ '${plugins}' ]] || exit 0
+          for plugin in ${plugins}; do
+            ln -s "$plugin" $out/
+          done
+        '';
 
 in