etcd_3_4: drop

unmaintained upstream (and in nixpkgs for some reason)

doc/release-notes/rl-2611.section.md

@@ -46,6 +46,8 @@
 
 - Support for the legacy U‐Boot image format has been removed from the Linux kernel builders, as it is deprecated upstream and no longer used by any platform in Nixpkgs.
 
+- `etcd_3_4` package was dropped, as it's gone EOL. Please upgrade to either 3.5 or 3.6. See [migration notes](https://etcd.io/docs/v3.6/upgrades/upgrade_3_6/) for incompatibilities and upgrade procedure.
+
 - `rke2` retires ingress-nginx and transitions to Traefik starting in `rke2_1_36`. Because ingress-nginx was retired upstream as of March 2026, Traefik is now the default
   for new clusters starting in v1.36 (existing clusters will keep their current ingress upon upgrade to avoid breakage). This transition brings the following structural changes:
   - Airgapped Environments: The rke2-images-core tarball now contains Traefik images instead of ingress-nginx. The standalone rke2-images-traefik tarball has been removed.

nixos/tests/etcd/default.nix

@@ -22,16 +22,11 @@ let
       } (import path etcdPkgs)
     );
   testEtcdPkg = pkg: path: testEtcd path { etcd = pkg; };
-  testEtcd_3_4 = testEtcdPkg pkgs.etcd_3_4;
   testEtcd_3_5 = testEtcdPkg pkgs.etcd_3_5;
   testEtcd_3_6 = testEtcdPkg pkgs.etcd_3_6;
 in
 
 {
-  "3_4" = {
-    multi-node = testEtcd_3_4 ./multi-node.nix;
-    single-node = testEtcd_3_4 ./single-node.nix;
-  };
   "3_5" = {
     multi-node = testEtcd_3_5 ./multi-node.nix;
     single-node = testEtcd_3_5 ./single-node.nix;

pkgs/by-name/et/etcd_3_4/package.nix

@@ -1,49 +0,0 @@
-{
-  lib,
-  buildGoModule,
-  fetchFromGitHub,
-  nixosTests,
-}:
-
-buildGoModule (finalAttrs: {
-  pname = "etcd";
-  version = "3.4.45";
-
-  src = fetchFromGitHub {
-    owner = "etcd-io";
-    repo = "etcd";
-    tag = "v${finalAttrs.version}";
-    hash = "sha256-GvhejN7+woYK7UBNguzEaO6rqAbT7Vbwl5nFmI/F6Sc=";
-  };
-
-  proxyVendor = true;
-  vendorHash = "sha256-0xIK71sAwMzzSaN2lFKKdGtDKWYtL25x5GDoO6bO0wI=";
-
-  preBuild = ''
-    go mod tidy
-  '';
-
-  buildPhase = ''
-    runHook preBuild
-    patchShebangs .
-    ./build
-    ./functional/build
-    runHook postBuild
-  '';
-
-  doCheck = false;
-
-  postInstall = ''
-    install -Dm755 bin/* bin/functional/cmd/* -t $out/bin
-  '';
-
-  passthru.tests = nixosTests.etcd."3_4";
-
-  meta = {
-    description = "Distributed reliable key-value store for the most critical data of a distributed system";
-    downloadPage = "https://github.com/etcd-io/etcd/";
-    license = lib.licenses.asl20;
-    homepage = "https://etcd.io/";
-    maintainers = [ ];
-  };
-})

pkgs/top-level/aliases.nix

@@ -736,6 +736,7 @@ mapAliases {
   esbuild-config = throw "'esbuild-config' has been removed as it has been unmaintained upstream since September 2022"; # Added 2026-02-07
   esbuild_netlify = throw "'esbuild_netlify' has been removed, as the netlify esbuild fork is abandoned upstream and no longer used by netlify-cli; use 'esbuild' instead"; # Added 2026-06-08
   etBook = warnAlias "'etBook' has been renamed to 'et-book'" et-book; # Added 2026-02-08
+  etcd_3_4 = throw "'etcd_3_4' is EOL and has been removed, use 'etcd' or a maintained version"; # Added 2026-07-02
   ethercalc = throw "'ethercalc' has been removed from nixpkgs as the project was old, unmaintained, and could not be packaged well in nixpkgs"; # Added 2025-11-28
   ethersync = warnAlias "'ethersync' has been renamed to 'teamtype'" teamtype; # Added 2025-10-31
   eureka-ideas = throw "'eureka-ideas' has been removed as it has been unmaintained upstream since April 2023"; # Added 2026-02-07