programs: replace coreutils uptime with procps uptime

hosts/common/programs/assorted.nix

@@ -117,6 +117,7 @@ in
       "unixtools.ps"
       "unixtools.sysctl"
       "unixtools.xxd"
+      "uptime"
       "usbutils"  # lsusb
       "util-linux"  # lsblk, lscpu, etc
       "valgrind"

hosts/common/programs/default.nix

@@ -207,6 +207,7 @@
     ./tor-browser.nix
     ./tuba.nix
     ./unl0kr
+    ./uptime.nix
     ./v4l-utils.nix
     ./via.nix
     ./video-trimmer.nix

hosts/common/programs/uptime.nix

@@ -0,0 +1,11 @@
+{ pkgs, ... }:
+{
+  sane.programs.uptime = {
+    # `uptime` is provided by one of:
+    # - busybox
+    # - coreutils (nixos default)
+    # - procps
+    # none of them are great, but procps at least supports `uptime --since`
+    packageUnwrapped = pkgs.linkBinIntoOwnPackage pkgs.procps "uptime";
+  };
+}