From 0b905011e8f0363b4b94bade6927078fe2e1842a Mon Sep 17 00:00:00 2001
From: Alexey Kuleshevich <alexey@kuleshevi.ch>
Date: Sat, 14 Dec 2024 09:54:46 -0700
Subject: [PATCH] Add lts-9

---
 .github/workflows/ci.yaml | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 869807c8..fa66884c 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -101,8 +101,10 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest]
-        resolver: [nightly, lts-22, lts-21, lts-20, lts-19, lts-18, lts-16, lts-14, lts-12, lts-11]
+        resolver: [nightly, lts-22, lts-21, lts-20, lts-19, lts-18, lts-16, lts-14, lts-12, lts-11, lts-9]
         include:
+          - resolver: lts-9
+            stack-yaml: stack-custom.yaml
           - resolver: lts-11
             stack-yaml: stack-custom.yaml
           - resolver: lts-12
@@ -174,7 +176,7 @@ jobs:
       with:
         ghc-version: ${{ matrix.ghc }}
         enable-stack: true
-        stack-version: ${{ matrix.resolver == 'lts-11' && '2.15.5' || 'latest' }}
+        stack-version: ${{ (matrix.resolver == 'lts-9' || matrix.resolver == 'lts-11') && '2.15.5' || 'latest' }}
 
     - name: Cache
       id: cache