The old `postInstall` was ugly, and made for a needlessly course-grained
package. This makes more smaller derivations, and ones that additionally
can be built in parallel.
Now that we assemble the source code per each package in a separate prep
derivation since b6727bbeac, we don't need
rsync in the package proper derivations.
I realized what rhelmot did in 61202561d9
(specify what packages just need `stdenvNoLibc`) is definitely the right
approach for this, and adjusted NetBSD and OpenBSD to likewise use it.
With that change, we don't need these confusing and ugly `*bsdCross`
package sets at all!
We can get rid of a lot more libc-related `*Cross`, and I will do so
soon, but this is the first step.
(adapted from commit 51f1ecaa59)
This is the most upstream one, and so to avoid infinite recursion we
should get the things from it. This isn't needed per-se now, but will be
after the next commit.
(cherry picked from commit 4bd76beac0)
This enable kernel support for TCP encapsulation of IPsec (RFC8229)
This is required for networks where the standard mode is not available
due to firewall rules blocking UDP traffic.
For a long time, we've had `crossLibcStdenv`, `*Cross` libc attributes,
and `*bsdCross` pre-libc package sets. This was always bad because
having "cross" things is "not declarative": the naming doesn't reflect
what packages *need* but rather how we *provide* something. This is
ugly, and creates needless friction between cross and native building.
Now, almost all of these `*Cross` attributes are gone: just these are
kept:
- Glibc's and Musl's are kept, because those packages are widely used
and I didn't want to risk changing the native builds of those at this
time.
- generic `libcCross`, `theadsCross`, and friends, because these relate
to the convolulted GCC bootstrap which still needs to be redone.
The BSD and obscure Linux or freestnanding libcs have conversely all
been made to use a new `stdenvNoLibc`, which is like the old
`crossLibcStdenv` except:
1. It usable for native and cross alike
2. It named according to what it *is* ("a standard environment without
libc but with a C compiler"), rather than some non-compositional
jargon ("the stdenv used for building libc when cross compiling",
yuck).
I should have done this change long ago, but I was stymied because of
"infinite recursions". The problem was that in too many cases we are
overriding `stdenv` to *remove* things we don't need, and this risks
cyles since those more minimal stdenvs are used to build things in the
more maximal stdenvs.
The solution is to pass `stage.nix` `stdenvNoCC`, so we can override to
*build up* rather than *tear down*. For now, the full `stdenv` is also
passed, so I don't need to change the native bootstraps, but I can see
this changing as we make things more uniform and clean those up.
Finally, the BSDs also had to be cleaned up, since they have a few
pre-libc dependencies, demanding a systematic approach. I realized what
rhelmot did in 61202561d9 (specify what
packages just need `stdenvNoLibc`) is definitely the right approach for
this, and adjusted NetBSD and OpenBSD to likewise use it.
This is the most upstream one, and so to avoid infinite recursion we
should get the things from it. This isn't needed per-se now, but will be
after the next commit.
The big `fetchCVS` is slow, but a one-time cost. Everything else is much
faster, and not having to manage a gazillion `version` and `sha256`
fields is much easier.
This brings NetBSD in line with how we do FreeBSD and OpenBSD.
