From 5eb54a1cfbc7d11ff91f6c4e6e63c0537998884c Mon Sep 17 00:00:00 2001
From: Daniel Nagy <danielnagy@posteo.de>
Date: Tue, 23 May 2023 10:15:00 +0200
Subject: [PATCH] epub2txt2: use makeFlags instead of preConfigure, add
 mainProgram

---
 pkgs/tools/text/epub2txt2/default.nix | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/pkgs/tools/text/epub2txt2/default.nix b/pkgs/tools/text/epub2txt2/default.nix
index b648d706e5fa..c8645fc5fe2a 100644
--- a/pkgs/tools/text/epub2txt2/default.nix
+++ b/pkgs/tools/text/epub2txt2/default.nix
@@ -11,12 +11,7 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-zzcig5XNh9TqUHginsfoC47WrKavqi6k6ezir+OOMJk=";
   };
 
-  preConfigure = ''
-   sed -i Makefile -e 's!DESTDIR)!out)!'
-   sed -i Makefile -e 's!/usr!!'
-  '';
-
-  makeFlags = [ "CC:=$(CC)" ];
+  makeFlags = [ "CC:=$(CC)" "PREFIX:=$(out)" ];
 
   meta = {
     description = "A simple command-line utility for Linux, for extracting text from EPUB documents.";
@@ -24,5 +19,6 @@ stdenv.mkDerivation rec {
     license = lib.licenses.gpl3Only;
     platforms = lib.platforms.unix;
     maintainers = [ lib.maintainers.leonid ];
+    mainProgram = "epub2txt";
   };
 }