(cherry picked from commit ec49ea2)

It's all dead code since 2014 (commit 0c6d62c).

(cherry picked from commit 458282b)

Dead code since NixOS/nixpkgs@6669a3b

(cherry picked from commit 2894197)

This reverts commit d277442.

Make sucks.

(cherry picked from commit c651b7b)

(cherry picked from commit 64d7d1a)

This reduces the size of the closure by 45 MiB.

(cherry picked from commit 145db70)

(cherry picked from commit 5e83b02)

(cherry picked from commit 4143977)

The profile present in PATH is not necessarily the actual profile
location. User profiles are generally added as $HOME/.nix-profile
in which case the indirect profile link needs to be resolved first.

/home/user/.nix-profile -> /nix/var/nix/profiles/per-user/user/profile
/nix/var/nix/profiles/per-user/user/profile -> profile-15-link
/nix/var/nix/profiles/per-user/user/profile-14-link -> /nix/store/hyi4kkjh3bwi2z3wfljrkfymz9904h62-user-environment
/nix/var/nix/profiles/per-user/user/profile-15-link -> /nix/store/6njpl3qvihz46vj911pwx7hfcvwhifl9-user-environment

To upgrade nix here we want /nix/var/nix/profiles/per-user/user/profile-16-link
instead of /home/user/.nix-profile-1-link. The latter is not a gcroot
and would be garbage collected, resulting in a broken profile.

Fixes NixOS#2175

(cherry picked from commit d85bb48)

(cherry picked from commit 0767e40)

(cherry picked from commit 264e66f)

E.g.

  $ nix upgrade-nix
  error: directory '/home/eelco/Dev/nix/inst/bin' does not appear to be part of a Nix profile

instead of

  $ nix upgrade-nix
  error: '/home/eelco/Dev/nix/inst' is not a symlink

(cherry picked from commit f08b14c)

…-user/...

Also some cosmetic improvements.

(cherry picked from commit 39f1722)

shell.nix defines the install prefix as $(pwd)/inst

(cherry picked from commit 8ad2def)

(cherry picked from commit 81d1385)

(cherry picked from commit 10ebcf8)

Maybe there is a better place to document this, which is more generic?

(cherry picked from commit 33712fe)

(cherry picked from commit 2df21b7)

(cherry picked from commit 149d10c)

(cherry picked from commit 4095cd6)

Fixes NixOS#2390.

(cherry picked from commit b7409c5)

This is already done by coerceToString(), provided that the argument
is a path (e.g. 'fetchGit ./bla'). It fixes the handling of URLs like
git@github.com:owner/repo.git. It breaks 'fetchGit "./bla"', but that
was never intended to work anyway and is inconsistent with other
builtin functions (e.g. 'readFile "./bla"' fails).

(cherry picked from commit 475a0a5)

(cherry picked from commit 0b7568f)

(cherry picked from commit b7bb627)

(cherry picked from commit 8770253)

(cherry picked from commit f66fa7c)

Use sh <(...) syntax for installation to preserve stdin and prompting

also update installation docs to account for changes in multi-user selection

(cherry picked from commit c3e508d)

(cherry picked from commit 51f9682)

…t selected for Linux with systemd, and the bug about selinux

(cherry picked from commit 4be7652)

(cherry picked from commit c42eaaf)

Thanks @bhipple for catching!

This commit just moves the code, nothing leverages this yet.

Also heh, from editline to libeditline again, after
a142164.

 - editline_dep for editline.h

 - libbz2_dep for bzlib.h, except we cannot because no pkg-config file
   so document that.

This is needed when cross compiling, and good practice in native builds
too to ensure developers don't accidentally use newer stuff.

This partially reverts commit 986f28a.

I'll try to fix this upstream so we can revert this commit.

Ensure no linux regressions!

Needs the gccpp lib, which the pkg-config file doesn't mention.

Meson should get mesonbuild/meson#106 fixed so
that we don't have to manually propogate the public dep.

Meson works fine with MinGW, and will work fine with MSVC, if only I
could finish building all the deps to prove it.