---
- branch: MAIN
  date: Sun May  1 08:03:41 UTC 2022
  files:
  - new: '1.421'
    old: '1.420'
    path: pkgsrc/mk/bsd.prefs.mk
    pathrev: pkgsrc/mk/bsd.prefs.mk@1.421
    type: modified
  - new: '1.89'
    old: '1.88'
    path: pkgsrc/mk/platform/Linux.mk
    pathrev: pkgsrc/mk/platform/Linux.mk@1.89
    type: modified
  - new: '1.66'
    old: '1.65'
    path: pkgsrc/mk/tools/tools.Linux.mk
    pathrev: pkgsrc/mk/tools/tools.Linux.mk@1.66
    type: modified
  id: 20220501T080341Z.251ca2a0eae7fbc5c6f235a4ae98ad99e764a6c4
  log: |
    mk: Initial support for NixOS (Linux variant)

    A particular challenge for pkgsrc on NixOS is that it usurps all
    Unix conventions and stores its system binaries and libraries in
    a crazy system of hashed sub-directories:

    $ which ls
    /run/current-system/sw/bin/ls
    $ ls -l /run/current-system/sw/bin/ls
    Lrwxrwxrwx 1 root root 65 Jan  1  1970 /run/current-system/sw/bin/ls -> /nix/store/xs02fpnpkq
    frhqqfsxx3lpj48wrapd00-coreutils-8.32/bin/ls

    We can make a "best effort" attempt to accomodate this by invoking
    the compiler to figure out where libc is.  In general, it's required to
    adjust the Linux files to make fewer assumptions about the layout of the
    filesystem.

    However, since using a compiler and libc from NixOS results in /nix/store
    paths being embedded in binaries, running the NixOS "garbage collector"
    can result in binaries installed from pkgsrc becoming unusable.  Use with
    care:

    $ readelf -a ~/pkg/bin/perl | grep nix
          [Requesting program interpreter: /nix/store/p5sam91qwz995pi0160rfr7dkh6pibil-glibc-2.32
    -39/lib/ld-linux-aarch64.so.1]
     0x000000000000001d (RUNPATH)            Library runpath: [/home/nia/pkg/lib:/home/nia/pkg/li
    b/perl5/5.32.0/aarch64-linux/CORE:/nix/store/p5sam91qwz995pi0160rfr7dkh6pibil-glibc-2.32-39/l
    ib:/nix/store/vv9nz0bwv1pfl70w14k7dgz6yx7hjwxk-gcc-9.3.0-lib/lib]

    Apparently, the "stdenv.cc" package must be installed prior to
    bootstrapping pkgsrc.

    I worked on this patch last year for a friend who wanted to test
    something on pkgsrc but had no other system available.
  module: pkgsrc
  subject: 'CVS commit: pkgsrc/mk'
  unixtime: '1651392221'
  user: nia