Update libbpf and bpftool for alpine and nix

Author: patricoferris

packages/conf-bpftool/conf-bpftool.0.1.0/opam

@@ -10,7 +10,9 @@ available: [ os = "linux" ]
 depexts: [
   [ "linux-tools-common" ] {os-distribution = "ubuntu"}
   [ "bpftool" ]            {os-distribution = "debian"}
-  [ "bpftool" ]		   {os-family = "fedora"}
+  [ "bpftool" ]            {os-family = "fedora"}
+  [ "bpftools" ]           {os-distribution = "nixos"}
+  [ "bpftool" ]            {os-distribution = "alpine"}
 ]
 flags: conf
 x-commit-hash: "c7ac4c7ff9f2aa23c374a619990c0bdd78976102"

packages/libbpf/libbpf.0.1.0/opam

@@ -37,11 +37,12 @@ dev-repo: "git+https://github.com/koonwen/ocaml-libbpf.git"
 # eBPF features by kernel version https://github.com/iovisor/bcc/blob/master/docs/kernel-versions.md
 # Fix to kernel >= 6.1 to provide bound BPF map types
 available: [ os = "linux" &
-	   (( os-distribution = "debian" & os-version >= "12" )     # Linux 6.1 & Libbpf 1.1.0
- 	   |( os-distribution = "ubuntu" & os-version >= "23.04" )  # Linux 6.2 & Libbpf 1.1.0
-	   |( os-family = "fedora" & os-version >= "38" )           # Linux 6.2 & Libbpf 1.1.0
-     |( os-distribution = "nixos"  & os-version >= "23.05" )) # Linux 6.1 & Libbpf 1.1.0
-	   ]
+       (( os-distribution = "debian" & os-version >= "12" )     # Linux 6.1 & Libbpf 1.1.0
+       |( os-distribution = "ubuntu" & os-version >= "23.04" )  # Linux 6.2 & Libbpf 1.1.0
+       |( os-family = "fedora" & os-version >= "38" )           # Linux 6.2 & Libbpf 1.1.0
+       |( os-distribution = "nixos"  & os-version >= "23.05" )  # Linux 6.1 & Libbpf 1.1.0
+       |( os-distribution = "alpine" & os-version >= "3.18"))   # Linux 6.1 & Libbpf 1.2.2
+       ]
 url {
   src:
     "https://github.com/koonwen/ocaml-libbpf/releases/download/v0.1.0/libbpf-0.1.0.tbz"