diff --git a/CMakeLists.txt b/CMakeLists.txt
index eb1611c23..27588b31a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1249,6 +1249,7 @@ elseif(GNU)
         src/detection/opengl/opengl_linux.c
         src/detection/os/os_linux.c
         src/detection/packages/packages_linux.c
+        src/detection/packages/packages_nix.c
         src/detection/poweradapter/poweradapter_nosupport.c
         src/detection/processes/processes_linux.c
         src/detection/gtk_qt/qt.c
diff --git a/src/detection/displayserver/linux/wmde.c b/src/detection/displayserver/linux/wmde.c
index f735bd40c..8310c4bc9 100644
--- a/src/detection/displayserver/linux/wmde.c
+++ b/src/detection/displayserver/linux/wmde.c
@@ -351,7 +351,7 @@ static const char* getFromProcesses(FFDisplayServerResult* result)
                 break;
         }
     }
-#elif __linux__
+#elif __linux__ || __GNU__
     FF_AUTO_CLOSE_DIR DIR* procdir = opendir("/proc");
     if(procdir == NULL)
         return "opendir(\"/proc\") failed";
diff --git a/src/detection/localip/localip_linux.c b/src/detection/localip/localip_linux.c
index f1aaf7874..2f9d29fea 100644
--- a/src/detection/localip/localip_linux.c
+++ b/src/detection/localip/localip_linux.c
@@ -29,8 +29,7 @@
 #if defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__APPLE__) || defined(__NetBSD__) || defined(__HAIKU__)
 #include <net/if_media.h>
 #include <net/if_dl.h>
-#elif defined(__GNU__)
-#else
+#elif !defined(__GNU__)
 #include <netpacket/packet.h>
 #endif
 #if defined(__sun) || defined(__HAIKU__)
diff --git a/src/detection/packages/packages.h b/src/detection/packages/packages.h
index 21e5ba544..7464a30c1 100644
--- a/src/detection/packages/packages.h
+++ b/src/detection/packages/packages.h
@@ -55,7 +55,7 @@ const char* ffDetectPackages(FFPackagesResult* result, FFPackagesOptions* option
 bool ffPackagesReadCache(FFstrbuf* cacheDir, FFstrbuf* cacheContent, const char* filePath, const char* packageId, uint32_t* result);
 bool ffPackagesWriteCache(FFstrbuf* cacheDir, FFstrbuf* cacheContent, uint32_t num_elements);
 
-#if defined(__linux__) || defined(__APPLE__)
+#if defined(__linux__) || defined(__APPLE__) || defined(__GNU__)
 uint32_t ffPackagesGetNix(FFstrbuf* baseDir, const char* dirname);
 #endif
 #ifndef _WIN32
diff --git a/src/detection/packages/packages_linux.c b/src/detection/packages/packages_linux.c
index 62cc27f80..95e117548 100644
--- a/src/detection/packages/packages_linux.c
+++ b/src/detection/packages/packages_linux.c
@@ -418,13 +418,11 @@ static void getPackageCounts(FFstrbuf* baseDir, FFPackagesResult* packageCounts,
     if (!(options->disabled & FF_PACKAGES_FLAG_EMERGE_BIT)) packageCounts->emerge += countFilesRecursive(baseDir, "/var/db/pkg", "SIZE");
     if (!(options->disabled & FF_PACKAGES_FLAG_EOPKG_BIT)) packageCounts->eopkg += getNumElements(baseDir, "/var/lib/eopkg/package", true);
     if (!(options->disabled & FF_PACKAGES_FLAG_FLATPAK_BIT)) packageCounts->flatpakSystem += getFlatpakPackages(baseDir, "/var/lib");
-    #if defined(__linux__) || defined(__APPLE__)
     if (!(options->disabled & FF_PACKAGES_FLAG_NIX_BIT))
     {
         packageCounts->nixDefault += ffPackagesGetNix(baseDir, "/nix/var/nix/profiles/default");
         packageCounts->nixSystem += ffPackagesGetNix(baseDir, "/run/current-system");
     }
-    #endif
     if (!(options->disabled & FF_PACKAGES_FLAG_PACMAN_BIT)) packageCounts->pacman += getNumElements(baseDir, "/var/lib/pacman/local", true);
     if (!(options->disabled & FF_PACKAGES_FLAG_LPKGBUILD_BIT)) packageCounts->lpkgbuild += getNumElements(baseDir, "/opt/Loc-OS-LPKG/lpkgbuild/remove", false);
     if (!(options->disabled & FF_PACKAGES_FLAG_PKGTOOL_BIT)) packageCounts->pkgtool += getNumElements(baseDir, "/var/log/packages", false);
@@ -519,7 +517,6 @@ void ffDetectPackagesImpl(FFPackagesResult* result, FFPackagesOptions* options)
     #endif
 
     ffStrbufSet(&baseDir, &instance.state.platform.homeDir);
-    #if defined(__linux__) || defined(__APPLE__)
     if (!(options->disabled & FF_PACKAGES_FLAG_NIX_BIT))
     {
         // Count packages from $HOME/.nix-profile
@@ -544,7 +541,6 @@ void ffDetectPackagesImpl(FFPackagesResult* result, FFPackagesOptions* options)
         FF_STRBUF_AUTO_DESTROY userPkgsDir = ffStrbufCreateStatic("/etc/profiles/per-user/");
         result->nixUser += ffPackagesGetNix(&userPkgsDir, instance.state.platform.userName.chars);
     }
-    #endif
 
     if (!(options->disabled & FF_PACKAGES_FLAG_GUIX_BIT))
     {
diff --git a/src/detection/uptime/uptime_linux.c b/src/detection/uptime/uptime_linux.c
index c1786a89b..1007374ce 100644
--- a/src/detection/uptime/uptime_linux.c
+++ b/src/detection/uptime/uptime_linux.c
@@ -33,6 +33,8 @@ const char* ffDetectUptime(FFUptimeResult* result)
 
     result->uptime = (uint64_t) uptime.tv_sec * 1000 + (uint64_t) uptime.tv_nsec / 1000000;
     result->bootTime = ffTimeGetNow() - result->uptime;
-    #endif
     return NULL;
+    #else
+    return "read(/proc/uptime) failed";
+    #endif
 }