agrep: fix build failure

changed to compile option '-ansi' and patched Makefile

pkgs/tools/text/agrep/default.nix

@@ -1,33 +1,43 @@
-{ lib, stdenv, fetchFromGitHub }:
+{
-
+  lib,
+  stdenv,
+  fetchFromGitHub,
+}:
+let
+  # This repository has numbered versions, but not Git tags.
+  rev = "b7d180fe73636740f694ec60c1ffab52b06e7150";
+in
 stdenv.mkDerivation {
   pname = "agrep";
-  version = "3.41.5";
+  version = "3.41.5-unstable-2022-03-23";
 
   src = fetchFromGitHub {
+    inherit rev;
     owner = "Wikinaut";
     repo = "agrep";
-    # This repository has numbered versions, but not Git tags.
+    hash = "sha256-2J4bw5BVZgTEcIn9IuD5Q8/L+8tldDbToDefuxDf85g=";
-    rev = "eef20411d605d9d17ead07a0ade75046f2728e21";
-    sha256 = "14addnwspdf2mxpqyrw8b84bb2257y43g5ccy4ipgrr91fmxq2sk";
   };
 
-  # Related: https://github.com/Wikinaut/agrep/pull/11
-  prePatch = lib.optionalString (stdenv.hostPlatform.isMusl || stdenv.isDarwin) ''
-    sed -i '1i#include <sys/stat.h>' checkfil.c newmgrep.c recursiv.c
-  '';
-  installPhase = ''
-    install -Dm 555 agrep -t "$out/bin"
-    install -Dm 444 docs/* -t "$out/doc"
-  '';
-
   makeFlags = [ "CC=${stdenv.cc.targetPrefix}cc" ];
 
-  meta = with lib; {
+  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.cc.isClang "-std=c89";
+
+  installPhase = ''
+    runHook preInstall
+
+    install -Dm 555 agrep -t "$out/bin"
+    install -Dm 444 docs/* -t "$out/doc"
+
+    runHook postInstall
+  '';
+
+  meta = {
     description = "Approximate grep for fast fuzzy string searching";
     mainProgram = "agrep";
     homepage = "https://www.tgries.de/agrep/";
-    license = licenses.isc;
+    maintainers = with lib.maintainers; [ momeemt ];
-    platforms = with platforms; linux ++ darwin;
+    changelog = "https://github.com/Wikinaut/agrep/blob/${rev}/CHANGES";
+    license = lib.licenses.isc;
+    platforms = lib.platforms.unix;
   };
 }