These patches enable hardware-accelerated video decoding, which is
useful for Stadia.
The main issue with this is that Hydra doesn't currently cache
Chromium with these patches, which means that it is built from scratch
which takes in the order of 5 hours on an otherwise unused nugget.
The install-multi-user script uses blue, green, and red colors, as
well as bold and underline, to add helpful formatting that helps
structure its rather voluminous output.
Unfortunately, the terminal escape sequences it uses are not quite
well-formed. The relevant information is all there, just obscured
by some extra noise, a leading parameter `38`. Empirically, the
result is:
* On macOS, in both Terminal.app and iTerm2, the spurious `38` is
ignored, the rest of the escape sequence is applied, and the colors
show up as intended.
* On Linux, in at least gnome-terminal and xterm, the spurious `38`
and the next parameter after it are ignored, and what's left is
applied. So in the sequence `38;4;32`, the 4 (underline) is
ignored but the 32 (green) takes effect; in a more typical sequence
like `38;34`, the 34 (blue) is ignored and nothing happens.
These codes are all unchanged since this script's origins as a
Darwin-only script -- so the fact that they work fine in common macOS
terminals goes some way to explain how the bug arose.
Happily, we can make the colors work as intended by just deleting the
extra `38;`. Tested in all four terminals mentioned above; the new
codes work correctly on all of them, and on the two macOS terminals
they work exactly the same as before.
---
In a bit more technical detail -- perhaps more than anyone, me
included, ever wanted to know, but now that I've gone and learned it
I'll write it down anyway :) -- here's what's happening in these codes:
An ECMA-48 "control sequence" begins with `\033[` aka "CSI", contains
any number of parameters as semicolon-separated decimal numbers (plus
sometimes other wrinkles), and ends with a byte from 0x40..0x7e. In
our case, with `m` aka "SGR", "Select Graphic Rendition".
An SGR control sequence `\033[...m` sets colors, fonts, text styles,
etc. In particular a parameter `31` means red, `32` green, `34` blue,
`4` underline, and `0` means reset to normal. Those are all we use.
There is also a `38`. This is used for setting colors too... but it
needs arguments. `38;5;nn` is color nn from a 256-color palette, and
`38;2;rr;gg;bb` has the given RGB values.
There is no meaning defined for `38;1` or `38;34` etc. On seeing a
parameter `38` followed by an unrecognized argument for it, apparently
some implementations (as seen on macOS) discard only the `38` and
others (as seen on Linux) discard the argument too before resuming.
(cherry picked from commit 7313aa267b5be1e5264e4577e7bc3daec2fef282)
The ssh client is lazily started by the first worker thread, that
requires a ssh connection. To avoid the ssh client to be killed, when
the worker process is stopped, do not set PR_SET_PDEATHSIG.
(cherry picked from commit 3e347220c82d1537723f49aa03a93a6f9d294417)
If the `throw` is reached, this means that execvp into `ssh` wasn’t
successful. We can hint at a usual problem, which is a missing `ssh`
executable.
Test with:
```
env PATH= ./result/bin/nix-copy-closure --builders '' unusedhost
```
and the bash version with
```
env PATH= ./result/bin/nix-copy-closure --builders '' localhost
```
(cherry picked from commit 38b29fb72ca4a07afbec1fd5067f59ca7d7f0fab)
Includes the expression of the condition in the assertion message if
the assertion failed, making assertions much easier to debug. eg.
error: assertion (withPython -> (python2Packages != null)) failed at pkgs/tools/security/nmap/default.nix:11:1
(cherry picked from commit 307bcb9a8e7a16bfc451e055a620b766df9d3f7d)
Signed-off-by: Domen Kožar <domen@dev.si>
When encountering an unsupported protocol, there's no need to retry.
Chances are, it won't suddenly be supported between retry attempts;
error instead. Otherwise, you see something like the following:
$ nix-env -i -f git://git@github.com/foo/bar
warning: unable to download 'git://git@github.com/foo/bar': Unsupported protocol (1); retrying in 335 ms
warning: unable to download 'git://git@github.com/foo/bar': Unsupported protocol (1); retrying in 604 ms
warning: unable to download 'git://git@github.com/foo/bar': Unsupported protocol (1); retrying in 1340 ms
warning: unable to download 'git://git@github.com/foo/bar': Unsupported protocol (1); retrying in 2685 ms
With this change, you now see:
$ nix-env -i -f git://git@github.com/foo/bar
error: unable to download 'git://git@github.com/foo/bar': Unsupported protocol (1)
(cherry picked from commit c976cb0b8ab5d0f2c4ab8c9826fc7db56e2f1b3e)
Signed-off-by: Domen Kožar <domen@dev.si>
The queue size setting will drop frames if the encoding starts to lag
behind, which should prevent delay from being introduced on the
serving side.
Maybe.
Builds ffmpeg with CUDA Toolkit as a dependency, which includes a
library called "libnpp" that provides something related to hardware
accelerated video stream resizing.
v0v
By randomly copy & pasting options that are impenetrable to mere
mortals from NVIDIA's developer blog and a bunch of gists scattered
throughout the internet, Andi and I managed to "get this to work".
The idea is that the x11grab stream should be resized into 720p (which
is the maximum supported by Google Meet), but with hardware
acceleration.
Modifies notmuch-show-open-or-close-subthread to take a parameter
instead of using prefix to toggle the argument, and binds that
function to C-, and C-. in notmuch-show-mode-map to enable convenient
collapsing/uncollapsing of subthreads from point.
Setting the GOROOT_FINAL environment variables replaces the absolute
location of the Go standard library sources in the final build
artefacts with a fake location (in this case starting with
go/src/...).
This is despite the documentation for 'trimpath' (in 'go tool
compile') stating that it would affect all source paths: That's only
true for user code!
I figured this out by reading through the implementation of the other
'trimpath' (in 'gob build'):
https://go-review.googlesource.com/c/go/+/173345
* Add support for 0x5f36 devices
This type of device requires a header in the payload. The rest is the same.
* Improve request header assignment
* Change code sending header
I just found out that this device uses a different header for sending codes. This update addresses this issue.
* Improve authentication
Use the error code to check if the authentication was successful.
* Use default value when devtype is None
* Use generic remote type if devtype is None
* Extend support to RM4 series
I just realized that RM4 devices use the same header. I will take the opportunity to extend support to these devices as well.
* Add device type 0x62be and create rm4 class
The rm4 class will improve code scalability. Just add the RM4 type to this class and it will just work.
* Remove comma
