From 59d3c26b458dd7962ca65245c0051124eb4a6f8f Mon Sep 17 00:00:00 2001
From: "aravind.mallapureddy" <aravind.mallapureddy@juspay.in>
Date: Mon, 6 Nov 2023 13:31:09 +0530
Subject: [PATCH 1/2] modified callPackage based on custom-default.nix file.

---
 nix/build-haskell-package.nix | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/nix/build-haskell-package.nix b/nix/build-haskell-package.nix
index 3563395a..41a62670 100644
--- a/nix/build-haskell-package.nix
+++ b/nix/build-haskell-package.nix
@@ -34,8 +34,13 @@ lib.pipe root
     (mkNewStorePath "source-${name}")
     (x: log.traceDebug "${name}.mkNewStorePath ${x.outPath}" x)
 
-    (root: self.callCabal2nix name root { })
-    (x: log.traceDebug "${name}.cabal2nixDeriver ${x.cabal2nixDeriver.outPath}" x)
+    (root: if lib.pathExists (lib.concatStringsSep "/" [root "custom-default.nix"])
+             then
+                let pkgInfo = self.callPackage (lib.concatStringsSep "/" [root "custom-default.nix"]) {};
+                in pkgInfo
+             else
+                let pkgInfo = self.callCabal2nix name root { };
+                in (log.traceDebug "${name}.cabal2nixDeriver ${pkgInfo.cabal2nixDeriver.outPath}" pkgInfo))
 
     # Make sure all files we use are included in the sdist, as a check
     # for release-worthiness.

From 21728488a3cc76b55f9ff9a1efd9a4d263b47e10 Mon Sep 17 00:00:00 2001
From: "aravind.mallapureddy" <aravind.mallapureddy@juspay.in>
Date: Tue, 14 Nov 2023 13:41:42 +0530
Subject: [PATCH 2/2] Reformatted build-haskell-package nix file.

---
 nix/build-haskell-package.nix | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

diff --git a/nix/build-haskell-package.nix b/nix/build-haskell-package.nix
index 41a62670..0c9bb826 100644
--- a/nix/build-haskell-package.nix
+++ b/nix/build-haskell-package.nix
@@ -34,13 +34,14 @@ lib.pipe root
     (mkNewStorePath "source-${name}")
     (x: log.traceDebug "${name}.mkNewStorePath ${x.outPath}" x)
 
-    (root: if lib.pathExists (lib.concatStringsSep "/" [root "custom-default.nix"])
-             then
-                let pkgInfo = self.callPackage (lib.concatStringsSep "/" [root "custom-default.nix"]) {};
-                in pkgInfo
-             else
-                let pkgInfo = self.callCabal2nix name root { };
-                in (log.traceDebug "${name}.cabal2nixDeriver ${pkgInfo.cabal2nixDeriver.outPath}" pkgInfo))
+    (root:
+      if lib.pathExists (lib.concatStringsSep "/" [ root "custom-default.nix" ])
+      then
+        let pkgInfo = self.callPackage (lib.concatStringsSep "/" [ root "custom-default.nix" ]) { };
+        in pkgInfo
+      else
+        let pkgInfo = self.callCabal2nix name root { };
+        in (log.traceDebug "${name}.cabal2nixDeriver ${pkgInfo.cabal2nixDeriver.outPath}" pkgInfo))
 
     # Make sure all files we use are included in the sdist, as a check
     # for release-worthiness.