From 314b03125f348a2970b86dcf77d9dc8039c7a981 Mon Sep 17 00:00:00 2001
From: Artturin <Artturin@artturin.com>
Date: Fri, 6 Jan 2023 01:48:11 +0200
Subject: [PATCH] stdenv: don't fail installPhase on missing makefile

otherwise the build just fails with 'make: *** No rule to make target 'install'.  Stop.'

and update buildPhase message

i don't know if the 'makefile may have been created in buildPhase' is
true but i guess it might be possible
---
 pkgs/stdenv/generic/setup.sh | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/pkgs/stdenv/generic/setup.sh b/pkgs/stdenv/generic/setup.sh
index b07420bb4185..d37fc029cfed 100644
--- a/pkgs/stdenv/generic/setup.sh
+++ b/pkgs/stdenv/generic/setup.sh
@@ -1253,7 +1253,7 @@ buildPhase() {
     runHook preBuild
 
     if [[ -z "${makeFlags-}" && -z "${makefile:-}" && ! ( -e Makefile || -e makefile || -e GNUmakefile ) ]]; then
-        echo "no Makefile, doing nothing"
+        echo "no Makefile or custom buildPhase, doing nothing"
     else
         foundMakefile=1
 
@@ -1323,6 +1323,15 @@ checkPhase() {
 installPhase() {
     runHook preInstall
 
+    # Dont reuse 'foundMakefile' set in buildPhase, a makefile may have been created in buildPhase
+    if [[ -z "${makeFlags-}" && -z "${makefile:-}" && ! ( -e Makefile || -e makefile || -e GNUmakefile ) ]]; then
+        echo "no Makefile or custom installPhase, doing nothing"
+        runHook postInstall
+        return
+    else
+        foundMakefile=1
+    fi
+
     if [ -n "$prefix" ]; then
         mkdir -p "$prefix"
     fi