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8bc5104a6e
When specifying the `builder` attribute in `stdenv.mkDerivation`, this
will be effectively transformed into
builtins.derivation {
builder = stdenv.shell;
args = [ "-e" builder ];
}
This also means that `default-builder.sh` is never sourced and as a
result it's not guaranteed that `$NIX_ATTRS_SH_FILE` is set to a correct
location[1].
Also, we need to source `.attrs.sh` to source `$stdenv`. So, the
following is done now:
* If `$NIX_ATTRS_SH_FILE` points to a correct location, then use it.
Directly using `.attrs.sh` is problematic for `nix-shell(1)` usage
(see previous commit for more context), so prefer the environment
variable if possible.
* Otherwise, if `.attrs.sh` exists, then use it. See [1] for when this
can happen.
* If neither applies, it can be assumed that `__structuredAttrs` is
turned off and thus nothing needs to be done.
[1] It's possible that it doesn't exist at all - in case of Nix 2.3 or
it can point to a wrong location on older Nix versions with a bug in
`__structuredAttrs`.
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| .. | ||
| arcan | ||
| budgie | ||
| cdesktopenv | ||
| cinnamon | ||
| deepin | ||
| enlightenment | ||
| expidus | ||
| gnome | ||
| gnome-2 | ||
| gnustep | ||
| lomiri | ||
| lumina | ||
| lxde | ||
| lxqt | ||
| mate | ||
| pantheon | ||
| plasma-5 | ||
| rox/rox-filer | ||
| surf-display | ||
| xfce | ||