From e87e1aa7fa11c4fc16d9541953a58c414712ab37 Mon Sep 17 00:00:00 2001
From: Anantha Kumaran <ananthakumaran@gmail.com>
Date: Sat, 14 Jun 2025 10:29:38 +0530
Subject: [PATCH] Fix CI

---
 .github/workflows/ci.yml | 45 ++++++++++------------------------------
 CHANGELOG.md             |  1 +
 mix.exs                  |  8 +------
 shell.nix                |  3 +--
 4 files changed, 14 insertions(+), 43 deletions(-)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8dabc05..b6684f3 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -3,29 +3,24 @@ on:
   - pull_request
 jobs:
   test:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     name: OTP ${{matrix.otp}} / Elixir ${{matrix.elixir}}
     strategy:
       fail-fast: false
       matrix:
         include:
-          - elixir: 1.6
-            otp: 20.3
-          - elixir: 1.8.2
-            otp: 21.3
-          - elixir: 1.9.4
-            otp: 22.2
-          - elixir: 1.10.4
-            otp: 23.0
-          - elixir: 1.13.0
-            otp: 24.1
-          - elixir: 1.14.0
-            otp: 25.0
-          - elixir: 1.16.0
-            otp: 26.0
+          - elixir: 1.12
+            otp: 24
+          - elixir: 1.14
+            otp: 25
+          - elixir: 1.15
+            otp: 25
+          - elixir: 1.17
+            otp: 27
+          - elixir: 1.18
+            otp: 27
             check_warnings: true
             check_format: true
-            dialyzer: true
     steps:
       - uses: actions/checkout@v2
       - uses: erlef/setup-elixir@v1
@@ -42,21 +37,3 @@ jobs:
         uses: codecov/codecov-action@v4.0.1
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
-      - name: Restore PLT cache
-        uses: actions/cache@v4
-        if: ${{ matrix.dialyzer }}
-        id: plt_cache
-        with:
-          key: |
-            ${{ runner.os }}-${{ matrix.elixir }}-${{ matrix.otp }}-plt
-          restore-keys: |
-            ${{ runner.os }}-${{ matrix.elixir }}-${{ matrix.otp }}-plt
-          path: |
-            priv/plts
-      # Create PLTs if no cache was found
-      - name: Create PLTs
-        if: ${{ matrix.dialyzer && steps.plt_cache.outputs.cache-hit != 'true' }}
-        run: mix dialyzer --plt
-      - name: Run dialyzer
-        if: ${{ matrix.dialyzer }}
-        run: mix dialyzer
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7915726..742ec08 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -17,6 +17,7 @@ Types of changes:
 
 
 ## [Unreleased] - yyyy-mm-dd
+- Drop support for Elixir < 1.12
 
 ## [0.6.6] - 2025-03-29
 
diff --git a/mix.exs b/mix.exs
index 58d3a1e..3333164 100644
--- a/mix.exs
+++ b/mix.exs
@@ -8,7 +8,7 @@ defmodule Zstream.Mixfile do
     [
       app: :zstream,
       version: @version,
-      elixir: "~> 1.6",
+      elixir: "~> 1.12",
       start_permanent: Mix.env() == :prod,
       description: "Streaming zip file writer and reader",
       package: package(),
@@ -17,11 +17,6 @@ defmodule Zstream.Mixfile do
       preferred_cli_env: [
         "coveralls.json": :test
       ],
-      dialyzer: [
-        plt_add_deps: :apps_direct,
-        flags: [:unmatched_returns, :error_handling, :underspecs],
-        plt_file: {:no_warn, "priv/plts/dialyzer.plt"}
-      ],
       deps: deps()
     ]
   end
@@ -36,7 +31,6 @@ defmodule Zstream.Mixfile do
     [
       {:temp, "~> 0.4", only: :test, runtime: false},
       {:ex_doc, ">= 0.0.0", only: :dev, runtime: false},
-      {:dialyxir, "~> 1.4", only: [:dev, :test], runtime: false},
       {:excoveralls, "~> 0.18", only: :test}
     ]
   end
diff --git a/shell.nix b/shell.nix
index 6ebb1e7..aad32e8 100644
--- a/shell.nix
+++ b/shell.nix
@@ -1,5 +1,4 @@
 { pkgs ? import <nixpkgs> { } }:
 pkgs.mkShell {
-  nativeBuildInputs =
-    [ pkgs.beam.packages.erlang_26.elixir_1_16 ];
+  nativeBuildInputs = [ pkgs.beam.packages.erlang_27.elixir_1_18 ];
 }