Update nix pin with `make nixpkgs`

This PR introduce 3 changes:

  - Upgrade Nix stable channel from 20.03 to 20.09.

    NixOS 20.09 released at 2020-10-27, see
    <https://nixos.org/manual/nixos/stable/release-notes.html#sec-release-20.09>
    for more information.

  - Replace `git` with `gitMinimal`.

    All 6 projects (i.e. crun/conmon/skopeo/buildah/podman/cri-o) are
    having `git` as dependency for failsafe during bootstrap. BTW
    <https://github.com/NixOS/nixpkgs/pull/104896> replace `asciidoc`
    with `asciidoctor` so trigger the dependency chain to `glib` and so
    failed (see below). Switching to `gitMinimal` skip this dependency
    chain to `glib`, which also speed up overall build process.

  - Adding `-pthread` for `glib`

    `conmon` couldn't skip the error by replacing `git` with
    `gitMinimal` since it do depend on `glib`. Since `glib` trigger
    error message "undefined reference to 'pthread\_create'", therefore
    adding `pthread` to `CFLAGS` could solve the problem.

Also see:

  - <https://github.com/containers/crun/pull/550>
  - <https://github.com/containers/conmon/pull/218>
  - <https://github.com/containers/skopeo/pull/1120>
  - <https://github.com/containers/buildah/pull/2831>
  - <https://github.com/containers/podman/pull/8526>
  - <https://github.com/cri-o/cri-o/pull/4395>

Signed-off-by: Wong Hoi Sing Edison <hswong3i@pantarei-design.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/Makefile b/Makefile
index 610449e9d..68502e6b4 100644
--- a/Makefile
+++ b/Makefile
@@ -226,7 +226,7 @@ bin/podman.cross.%: .gopathok
 # Update nix/nixpkgs.json its latest stable commit
 .PHONY: nixpkgs
 nixpkgs:
-	@nix run -f channel:nixos-20.03 nix-prefetch-git -c nix-prefetch-git \
+	@nix run -f channel:nixos-20.09 nix-prefetch-git -c nix-prefetch-git \
 		--no-deepClone https://github.com/nixos/nixpkgs > nix/nixpkgs.json
 
 # Build statically linked binary