From d7d44eb80840bbb8e338baf39c0708d3fe3be699 Mon Sep 17 00:00:00 2001
From: Nikolay Korotkiy <sikmir@disroot.org>
Date: Sun, 28 May 2023 17:17:40 +0400
Subject: [PATCH] rtl-sdr: fix version in librtlsdr.pc

Before the fix:
```sh
$ grep Version result/lib/pkgconfig/librtlsdr.pc
Version: v0.8.x-xxx-xunknown
```
It causes problem while building projects that use librtlsdr:
```sh
 -- Checking for module 'librtlsdr>=0.5.4'
 --   Requested 'librtlsdr >= 0.5.4' but version of RTL-SDR Library is v0.8.x-xxx-xunknown
```

After the fix:
```sh
$ grep Version result/lib/pkgconfig/librtlsdr.pc
Version: 0.8.0
```
---
 pkgs/applications/radio/rtl-sdr/default.nix | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/pkgs/applications/radio/rtl-sdr/default.nix b/pkgs/applications/radio/rtl-sdr/default.nix
index 722a0565e0de..c0e658678061 100644
--- a/pkgs/applications/radio/rtl-sdr/default.nix
+++ b/pkgs/applications/radio/rtl-sdr/default.nix
@@ -19,7 +19,8 @@ stdenv.mkDerivation rec {
 
   postPatch = ''
     substituteInPlace CMakeLists.txt \
-      --replace '/etc/udev/rules.d' "$out/etc/udev/rules.d"
+      --replace '/etc/udev/rules.d' "$out/etc/udev/rules.d" \
+      --replace "VERSION_INFO_PATCH_VERSION git" "VERSION_INFO_PATCH_VERSION ${lib.versions.patch version}"
 
     substituteInPlace rtl-sdr.rules \
       --replace 'MODE:="0666"' 'ENV{ID_SOFTWARE_RADIO}="1", MODE="0660", GROUP="plugdev"'