For one particular NixOS configuration, this cut the runtime of
"nix-store -r --dry-run" from 6m51s to 3.4s. It also fixes a bug in
the size calculation that was causing certain paths to be counted
twice, e.g. before:
these paths will be fetched (1249.98 MiB download, 2995.74 MiB unpacked):
and after:
these paths will be fetched (1219.56 MiB download, 2862.17 MiB unpacked):
Once upon a time, I wrote my bachelors thesis about functional
deployment mechanisms.
I had to evaluate several szenarios where package management and
deployment were relevant. One szenario was to do distributed builds
over several machines.
I told myself: Weee, nix can do this! And with nix, this is actually
save, as you do not have side effects when building!
So I started. I use a cloud to set up four virtual machines where I
wanted to do the build. A fifth machine was used as master to distribute
the builds. All was good.
I created the necessary SSH keys, made sure every machine was reachable
by the master and configured the build in my remotes.conf.
When I started to try to build weechat from source, the build failed. It
failed, telling me
error: unable to start any build; either increase ‘--max-jobs’ or enable distributed builds
And I started to dig around. I digged long and good. But I wasn't able
to find the issue.
I double and triple checked my environment variables, my settings, the
SSH key and everything.
I reached out to fellow Nixers by asking on the nixos IRC channel. And I
got help. But we weren't able to find the issue, either.
So I became frustrated. I re-did all the environment variables.
And suddenly,... it worked! What did I change? Well... I made the
environment variables which contained pathes contain absolute pathes
rather than relatives.
And because I like to share my knowledge, this should be put into the
documentation, so others do not bang their heads against the wall
because something is not documented somewhere.
* exwm-workspace.el (exwm-workspace--add-frame-as-workspace): Do not run
`exwm-workspace-list-change-hook' when create workspace in the background.
(exwm-workspace-switch-create): Run the hook once.
(exwm-workspace--prompt-add): Run the hook.
* exwm-input.el (exwm-input--update-focus-window)
(exwm-input--on-buffer-list-update, exwm-input--update-focus-interval)
(exwm-input--update-focus-lock, exwm-input--update-focus-defer-timer)
(exwm-input--update-focus-timer, exwm-input--update-focus-defer)
(defun exwm-input--update-focus): Rework the input focus update
mechanism, mainly to overcome the input focus update contention.
* exwm-input.el (defun exwm-input--update-focus): Use `select-window'
instead of `exwm-workspace-switch'; calling the latter is too expensive.
* exwm-layout.el (exwm-layout--on-minibuffer-setup): Drop a unnecessary
line.
* exwm-workspace.el (exwm-workspace-switch): Set input focus to the new
workspace frame.
* exwm-workspace.el (exwm-workspace-switch)
(exwm-workspace-switch-create): Move support for creating missing
workspaces from the former to the latter..
(exwm-workspace-switch-create-limit): New variable limiting the number
of new workspaces allowed to create each time.
* exwm-workspace.el (exwm-workspace--prompt-add)
(exwm-workspace--prompt-delete): New commands for adding and deleting
workspaces from the `read-from-minibuffer' prompt.
(exwm-workspace--prompt-add-allowed)
(exwm-workspace--prompt-delete-allowed): New variables telling whether
the above two commands are allowed to run.
(exwm-workspace--switch-map): Change "+" / "-" to use the new commands.
* exwm-workspace.el (exwm-workspace-switch, exwm-workspace-swap)
(exwm-workspace-move-window): Use this new feature.
* exwm-workspace.el (exwm-workspace-add, exwm-workspace-delete): Since
they are not used by the keymap any more, drop the use of idle timer.
* exwm-workspace.el (exwm-workspace--create-silently): New variable
indicating whether new workspaces should be created in the background.
(exwm-workspace--add-frame-as-workspace): Support creating new
workspaces in the background.
* exwm-workspace.el (exwm-workspace--on-ConfigureNotify):
Update workareas if it's not up to date.
* exwm-randr.el (exwm-randr--refresh): Raise the standalone minibuffer
when refreshed.
* exwm-config.el (exwm-config-default): Add `exwm-workspace-number' and
`exwm-workspace-switch-create'.
* exwm-core.el (exwm-mode-menu, exwm-mode-map): Add workspace
attach/detach commands.
* exwm-workspace.el (exwm-workspace--add-frame-as-workspace):
Cleanup containers.
* exwm-workspace.el (exwm-workspace--update-ewmh-props): Create the
frame in size 1x1 (Lucid build does no support zero sized frames).
* exwm-workspace.el (exwm-workspace--post-init): Reset the 'fullscreen'
frame parameter for emacsclient.
* exwm-workspace.el (exwm-workspace--update-minibuffer-height): Renamed
from `exwm-workspace--update-minibuffer' to better reflect its usage.
* exwm-input.el (exwm-input--update-focus): Directly put the floating
X window at top since the minibuffer is no longer a sibling.
* exwm-workspace.el (exwm-workspace--resize-minibuffer-frame): Calculate
position in absolute coordinate; put minibuffer at bottom by default;
resize the minibuffer frame with ConfigureWindow rather than
`set-frame-width'.
(exwm-workspace-switch): No need to reparent minibuffer any more.
(exwm-workspace--on-ConfigureNotify): Calculate position in absolute
coordinate.
(exwm-workspace--show-minibuffer, exwm-workspace--hide-minibuffer):
Show/Hide the minibuffer by adjusting the stacking order rather than
mapping/unmapping.
(exwm-workspace--init): Map the minibuffer frame container on creation.
* exwm-workspace.el (exwm-workspace--minibuffer-attached-p):
New function telling whether the minibuffer is attached.
(exwm-workspace--attached-minibuffer-height): New variable storing the
height of the attached minibuffer.
(exwm-workspace-attach-minibuffer, exwm-workspace-detach-minibuffer):
New functions for attaching/detaching the minibuffer.
* exwm-workspace.el (exwm-workspace--show-minibuffer): Remove the
workaround for minibuffer cursor (seems fixed).
* exwm-workspace.el (exwm-workspace-list-change-hook):
New hook run when the workspace list is modified.
* exwm-randr.el (exwm-randr--init, exwm-randr--exit):
* exwm-workspace.el (exwm-workspace-swap, exwm-workspace-move)
(exwm-workspace--add-frame-as-workspace)
(exwm-workspace--remove-frame-as-workspace):
Use it.
* exwm-workspace.el (exwm-workspace--add-frame-as-workspace):
Fix the checking criteria of floating frames; Copy RandR frame
parameters from the first workspace frame (rather than the selected one
which can be a floating frame).
* exwm-workspace.el (exwm-workspace--remove-frame-as-workspace):
Check frame type first.
* exwm-floating.el (exwm-floating--set-floating): Add a workaround to
prevent accidental move of Emacs frame when struts are set.
* exwm-workspace.el (exwm-workspace--update-workareas): Make legacy
docks working.
No longer fill initial workspace list, nor limit the number of
workspaces to `exwm-worspace-number'.
Users are free to create as many as they like by hitting 'C-x 5 2' or
running `make-frame'.
The initial workspace list can be set up by creating frames in a
configuration file. For example, to start up with 4 workspaces:
(dolist (i 3)
(make-frame))
The interactive workspace switcher is improved to support selecting
workspaces with a many-digits position.
* exwm-workspace.el (exwm-workspace-number): Remove variable, as
we no longer have a fixed number of workspaces.
(exwm-workspace--switch-map)
(exwm-workspace--switch-map-nth-prefix)
(exwm-workspace--switch-map-select-nth): Improve support for
selecting workspaces with multiple-digit positions (e.g. workspace
number 12).
(exwm-workspace--add-frame-as-workspace, exwm-workspace--init):
Remove limit on number of workspaces.
(exwm-workspace--init): Stop creating workspaces at startup.
* exwm-config.el (exwm-config-default): Bind keys to namespaces
0-9 in the default configuration.
Frames created via `make-frame' are added to the workspace list;
`delete-frame' removes them from the list. Floating frames,
non-graphical frames, as well as those associated to different
displays are ignored.
When deleting a workspace, care is taken to reparent that all X clients
another workspace.
* exwm-workspace.el (exwm-workspace--add-frame-as-workspace)
(exwm-workspace--remove-frame-as-workspace): New functions that
intercept created and deleted frames and configure them as EXWM
workspaces.
(exwm-workspace--update-ewmh-props): New function to update
desktop-related EWMH properties after workspace changes.
(exwm-workspace--init): Use
`exwm-workspace--add-frame-as-workspace' to create the initial
workspaces.
* exwm-workspace.el (exwm-workspace--prompt-for-workspace): New
function to interactively ask the user for a workspace.
(exwm-workspace-switch, exwm-workspace-move-window): Use it.
* exwm.el (exwm--on-ClientMessage):
* exwm-workspace.el (exwm-workspace-switch)
(exwm-workspace-move-window, exwm-workspace-switch-to-buffer):
* exwm-layout.el (exwm-layout--refresh):
* exwm-input.el (exwm-input--update-focus)
(exwm-input--on-ButtonPress): Accept frame as well as workspace
index as argument.
* exwm-workspace.el
(exwm-workspace--workspace-from-frame-or-index): New function.
* exwm-workspace.el
(exwm-workspace--modify-all-x-frames-parameters): Helper function
to non-destructively modify `window-system-default-frame-alist'.
(exwm-workspace--init): Use above function to default all frames
to the shared minibuffer when
`exwm-workspace--minibuffer-own-frame-p' is true.
