From 4cc520ba0fcb460e42a04802982be1b8d3312773 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=B6rg=20Thalheim?= <joerg@thalheim.io>
Date: Mon, 27 Apr 2020 10:11:22 +0100
Subject: [PATCH] kops: remove old versions

---
 .../networking/cluster/kops/default.nix           | 15 ---------------
 pkgs/top-level/all-packages.nix                   |  7 ++++---
 2 files changed, 4 insertions(+), 18 deletions(-)

diff --git a/pkgs/applications/networking/cluster/kops/default.nix b/pkgs/applications/networking/cluster/kops/default.nix
index 57e1fec2667..3e1f63531bb 100644
--- a/pkgs/applications/networking/cluster/kops/default.nix
+++ b/pkgs/applications/networking/cluster/kops/default.nix
@@ -51,21 +51,6 @@ in rec {
 
   mkKops = generic;
 
-  kops_1_12 = mkKops {
-    version = "1.12.3";
-    sha256 = "0rpbaz54l5v1z7ab5kpxcb4jyakkl5ysgz1sxajqmw2d6dvf7xly";
-  };
-
-  kops_1_13 = mkKops {
-    version = "1.13.2";
-    sha256 = "0lkkg34vn020r62ga8vg5d3a8jwvq00xlv3p1s01nkz33f6salng";
-  };
-
-  kops_1_14 = mkKops {
-    version = "1.14.1";
-    sha256 = "0ikd8qwrjh8s1sc95g18sm0q6p33swz2m1rjd8zw34mb2w9jv76n";
-  };
-
   kops_1_15 = mkKops {
     version = "1.15.2";
     sha256 = "1sjfd7pfi81ccq1dkgkh9xx6y94bqzlp727pvyf7l01x3d14z2b3";
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 5de0e20fe13..97cb7e8f1e1 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -25438,11 +25438,12 @@ in
 
   kontemplate = callPackage ../applications/networking/cluster/kontemplate { };
 
+  # In general we only want keep the last three minor versions around that
+  # correspond to the last three supported kubernetes versions:
+  # https://kubernetes.io/docs/setup/release/version-skew-policy/#supported-versions
+  # Exceptions are versions that we need to keep to allow upgrades from older NixOS releases
   inherit (callPackage ../applications/networking/cluster/kops {})
     mkKops
-    kops_1_12
-    kops_1_13
-    kops_1_14
     kops_1_15
     kops_1_16
     ;