equicord: switch to new tag format

pkgs/by-name/eq/equicord/package.nix

@@ -10,18 +10,22 @@
 }:
 stdenv.mkDerivation (finalAttrs: {
   pname = "equicord";
-  version = "1.11.4";
+  # Upstream discourages inferring the package version from the package.json found in
+  # the Equicord repository. Dates as tags (and automatic releases) were the compromise
+  # we came to with upstream. Please do not change the version schema (e.g., to semver)
+  # unless upstream changes the tag schema from dates.
+  version = "2025-04-17";
 
   src = fetchFromGitHub {
     owner = "Equicord";
     repo = "Equicord";
-    tag = "v${finalAttrs.version}";
-    hash = "sha256-BjAp+bubpG9tTo8y5LWcTCnpLbiyuY1Q6ZnprgeKoZg=";
+    tag = "${finalAttrs.version}";
+    hash = "sha256-pAuNqPrQBeL2qPIoIvyBl1PrUBz81TrBd5RT15Iuuus=";
   };
 
   pnpmDeps = pnpm_9.fetchDeps {
     inherit (finalAttrs) pname version src;
-    hash = "sha256-4uCo/pQ4f8k/7DNpCPDAeqfroZ9icFiTwapwS10uWkE=";
+    hash = "sha256-fjfzBy1Z7AUKA53yjjCQ6yasHc5QMaOBtXtXA5fNK5s=";
   };
 
   nativeBuildInputs = [
@@ -52,7 +56,12 @@ stdenv.mkDerivation (finalAttrs: {
     runHook postInstall
   '';
 
-  passthru.updateScript = nix-update-script { };
+  passthru.updateScript = nix-update-script {
+    extraArgs = [
+      "--version-regex"
+      "^\d{4}-\d{2}-\d{2}$"
+    ];
+  };
 
   meta = {
     description = "The other cutest Discord client mod";