automatically disable signature requirement

Having signatures enforced causes a big red error message to appear
below unsigned extensions, telling the user the extension has been
disabled. This is not true, though; the extensions are still enabled.
Setting xpinstall.signatures.required;false downgrades this error to a
(yellow) warning.

2 files changed, 3 insertions, 2 deletions

diff --git a/README b/README
index 8fcc300..7877dc0 100644
--- a/README
+++ b/README
@@ -8,8 +8,6 @@ Monkeypatching Firefox Quantum to run VimFx
 2. Install VimFx from https://github.com/akhodakivskiy/VimFx/releases
 
 == Notes ==
- * set `xpinstall.signatures.required;false` to downgrade the error message
-   that unsigned addons were supposedly disabled in about:config to a warning.
  * Users of firefox-esr on debian need to use the following command:
    `make DESTDIR=/usr/lib/firefox-esr install`
  * BootstrapLoader.jsm, RDFDataSource.jsm, RDFManifestConverter.jsm from their
diff --git a/config.js b/config.js
index d009577..210e7b7 100644
--- a/config.js
+++ b/config.js
@@ -18,6 +18,9 @@ try {
   const {AddonManager} = Cu.import('resource://gre/modules/AddonManager.jsm');
   const {BootstrapLoader} = Cu.import('resource://legacy/BootstrapLoader.jsm');
   AddonManager.addExternalExtensionLoader(BootstrapLoader);
+
+  const {Services} = Cu.import('resource://gre/modules/Services.jsm');
+  Services.prefs.setBoolPref('xpinstall.signatures.required', false);
 } catch(ex) {
   Components.utils.reportError(ex.message);
 }