From f297ac8a4d66292e783a2380b1864f0a99b9b7b5 Mon Sep 17 00:00:00 2001
From: Robert Helgesson <robert@rycee.net>
Date: Wed, 23 Aug 2023 10:34:30 +0200
Subject: [PATCH] cloc: add basic install check

---
 pkgs/tools/misc/cloc/default.nix | 27 +++++++++++++++++++++++++--
 1 file changed, 25 insertions(+), 2 deletions(-)

diff --git a/pkgs/tools/misc/cloc/default.nix b/pkgs/tools/misc/cloc/default.nix
index f6de1942ba6..a8fc4a4f01b 100644
--- a/pkgs/tools/misc/cloc/default.nix
+++ b/pkgs/tools/misc/cloc/default.nix
@@ -1,8 +1,9 @@
 { lib, stdenv, fetchFromGitHub, makeWrapper, perlPackages }:
 
-stdenv.mkDerivation rec {
+let version = "1.98";
+in stdenv.mkDerivation {
   pname = "cloc";
-  version = "1.98";
+  inherit version;
 
   src = fetchFromGitHub {
     owner = "AlDanial";
@@ -27,6 +28,28 @@ stdenv.mkDerivation rec {
 
   postFixup = "wrapProgram $out/bin/cloc --prefix PERL5LIB : $PERL5LIB";
 
+  doInstallCheck = true;
+  installCheckPhase = ''
+    runHook preInstallCheck
+
+    echo -n 'checking --version...'
+    $out/bin/cloc --version | grep '${version}' > /dev/null
+    echo ' ok'
+
+    cat > test.nix <<EOF
+    {a, b}: {
+      test = a
+        + b;
+    }
+    EOF
+
+    echo -n 'checking lines in test.nix...'
+    $out/bin/cloc --quiet --csv test.nix | grep '1,Nix,0,0,4' > /dev/null
+    echo ' ok'
+
+    runHook postInstallCheck
+  '';
+
   meta = {
     description = "A program that counts lines of source code";
     homepage = "https://github.com/AlDanial/cloc";