Commit Graph

429 Commits

Author SHA1 Message Date
Stefan Kalkowski
bdd923406f base: remove SPEC variables of boards (fix #3971)
* Remove SPEC declarations from mk/spec
* Remove all board-specific REQUIRE declaratiions left
* Replace [have_spec <board>] run-script declarations with have_board where necessary
* Remove addition of BOARD variable to SPECS in toplevel Makefile
* Move board-specific directories in base-hw out of specs
2021-01-25 13:58:09 +01:00
Martin Stein
2d21d04c76 cbe_tester.run: raise timeout to 6 minutes 2021-01-25 13:58:09 +01:00
Christian Helmuth
5ca3847c89 cbe_tester requires x86_64 currently 2021-01-25 12:51:53 +01:00
Norman Feske
d47f87a768 terminal: use GUI session directly
Issue #3196
Fixes #3970
2020-12-23 13:38:31 +01:00
Stefan Kalkowski
b907629341 sculpt: add basic support for i.MX8 Quad EVK
* Introduce CPU quota for driver subsytem (needed by sd_card_drv)
* Introduce CPU quota for runtime subsytem and nic_drv (needed by fec_nic_drv)
* Increase CAP quota for inspect terminal slightly
* Add sculpt packages for imx8q_evk

Fix #3958
2020-11-27 09:19:09 +01:00
Stefan Kalkowski
22852f2e50 sculpt: move pc-specifics away from generic part
* Introduce sculpt-[board] specific package
* Move rtc driver into managed drivers sub-system
* Name nic_drv in a generic fashion in sculpt_manager
* Copy over pc-specific config files only when building for PC

Ref #3958
2020-11-27 09:19:09 +01:00
Martin Stein
30b8f4efc8 gems: import Genode-specific code of the CBE
The CBE repository contained a lot of Genode-specific code despite the fact
that the CBE core logic is not bound to Genode in any way. Therefore the
Genode-specific CBE code is moved to the 'gems' repository to form part of
Genode mainline. The remaining CBE code becomes a port in Genode instead of
being invoked as sub-repository.

The commit combines the following work steps:

* add all files removed from CBE repository
* add CBE port files
* make all CBE libs and targets build again
* make all CBE run scripts succeed again
* make all CBE recipes build again
* make CBE autopilot succeed again
* let CBE autopilot use 'libsparcrypto' contrib dir and Genode build dir
  instead of '.ci' dir in CBE contrib dir (remove '.ci' dir from CBE repo)
* let CBE autopilot always check for all ports
* make CBE autopilot directly executable
* fix license headers in all Genode CBE files
* remove unused VFS replay component
* remove unused CBE test
* remove unused external crypto
* remove unused files in run dir
* remove unused external trust anchor
* add cbe_tester test to autopilot list
* get rid of directories 'include/cbe_*' and 'include/utils'

Fixes #3937
2020-11-27 09:19:08 +01:00
Alexander Boettcher
24181f2bf6 driver_manager: use componentized usb driver
Fixes #3943
2020-11-23 12:03:00 +01:00
Piotr Tworek
fe0ad0addb tool: Consolidate qemu nic setup.
Right now the same code dealing with nic setup on qemu is duplicated
in many different run scripts. It makes it unnecesarily complex to
change the existing config or add support for new nic types. Lets move
all this common code to qemu.inc.

Ref #3825
2020-10-09 13:35:57 +02:00
Alexander Boettcher
50b10ef4a5 aes_cbc_4k: extend test and run in autopilot
- to compare crypted text with host openssl

Fixes #3905
2020-10-09 13:35:56 +02:00
Christian Helmuth
ad595d2701 sculpt: version 20.09 2020-09-18 15:20:18 +02:00
Alexander Boettcher
2afba3c137 driver_manager: provide more memory to boot_fb
Fixes #3896
2020-09-18 14:04:56 +02:00
Norman Feske
c05f716478 menu view: respond to font configuration changes
Issue #3875
2020-09-09 16:57:34 +02:00
Norman Feske
be14e68a83 sculpt/vimrc: 'set nowritebackup'
By default, Vim renames a written file to a backup file suffixed with
"~" before writing the current buffer to a new file. Consequently, there
exists an intermediate state when no file exists. Should a client watch
such a file to obtain dynamic configuration info, it observes the empty
state.

Some components have builtin heuristics for such a situation. In
particular, the window layouter falls back to a predefined default
'rules' if no rules are provided as a file. So when interactively
editing window-layouter rules using Vim, it can happen that the manually
maintained rules get overwritten by the default rules.

By setting 'set nowritebackup', we can sidestep this issue by preventing
Vim from producing the bad intermediate state.
2020-09-09 16:57:34 +02:00
Christian Helmuth
574e41119a sculpt: version 20.08 2020-08-28 14:34:22 +02:00
Stefan Kalkowski
06edc0d52b base: extend PD session with managing_system call
Introduce the managing_system privilege for components like the
platform_driver to allow it to call system management functionality
that is reserved by kernel or special firmware, e.g., ARM Trusted Firmware.

The former RAM resource configuration attribute `constrain_phys`,
which enabled to constrain the region of physical RAM to be used,
gets replaced by the new, broader managing_system configuration
attribute of a `start` node. It gets enforced by the sandbox library.

Ref #3816
2020-08-25 11:50:11 +02:00
Norman Feske
28714979bd sculpt: drop storage-detect-cancellation feature
Fixes #3853
2020-08-25 11:50:10 +02:00
Norman Feske
f2d7f7aa6e sculpt: remove decor frame from panel view 2020-08-25 11:50:10 +02:00
Norman Feske
a59b69758b sculpt: remove deferred GUI initialization
The sculpt manager used to defer the initialization of the GUI until
nitpicker's first display report became ready. This way, Sculpt was able
to run headlessly even if the framebuffer driver failed to start up.
Thanks to #3827, nitpicker no longer depends on a working framebuffer
driver. So the sculpt manager is safe to rely on nitpicker in any case,
simplifying the code.

Issue #3827
2020-08-25 11:50:10 +02:00
Norman Feske
2e22498e5a nitpicker: no framebuffer and input by default
This patch prevents nitpicker from requesting a framebuffer and input
session by default because the regular use of nitpicker relies on the
capture-session and event-session interfaces by now.

For supporting the nested use of nitpicker via the gui_fb component, it
is still possible to enable the traditional behavior by explicitely
setting the 'request_input' and 'request_framebuffer' config attributes
to "yes".

Issue #3812
2020-08-25 11:50:09 +02:00
Norman Feske
9662d89cfb Replace input filter with event filter
This commit applies the transition from the "Input" session to the "Event"
session to the event-filtering mechansim. The functionality of the
input_filter is now provided by the event_filter. The event filter
requests only one "Event" session as destination for the filter result,
which is usually routed to the nitpicker GUI server. It provides an
"Event" service to which any number of event sources can connect.

The configuration of the filter chain remains almost the same. Only the
declaration of the <input> nodes is no longer needed. Instead, the
configuration must specify <policy> nodes, which define the mapping of
"Event" clients (event sources) to the inputs used in the filter chain.

The patch adjusts all uses of the nitpicker GUI server accordingly such
that the event filter reports events to nitpicker's event service
instead of having nitpicker request an "Input" session. This dissolves
the dependency of nitpicker from input drivers.

Issue #3827
2020-08-25 11:49:43 +02:00
Christian Helmuth
de7d4a5523 Replace libc_pipe plugin by VFS pipe plugin 2020-07-30 08:49:24 +02:00
Norman Feske
c81af531a3 Turn framebuffer drivers into capture clients
This patch replaces the use of the "Framebuffer" session interface by
the new "Capture" session interface in all framebuffer drivers. Thanks
to this change, those drivers have become mere clients of the nitpicker
GUI server now, and are no longer critical for the liveliness of the GUI
server.

The patch touches the following areas:

- The actual driver components. The new versions of all drivers have
  been tested on the respective hardware. Generally, the drivers
  have become simpler.

- The drivers_interactive packages for various boards. The drivers
  subsystem no longer provides a "Framebuffer" service but needs a
  valid route to the "Capture" service provided by nitpicker.

- The driver manager of Sculpt OS.

- This patch changes the role of the test-framebuffer component from a
  framebuffer client to a capture server so that drivers (capture clients)
  can be directly connected to the test component without the nitpicker
  server.

- Framebuffer driver no longer support the unbuffered mode.

- The fb_bench.run script is no longer very meaningful because it
  interplays solely with nitpicker, not with the driver directly.

- All run scripts for graphical scenarios and the related depot
  archives got adapted to the change.

Fixes #3813
2020-07-13 11:33:15 +02:00
Christian Prochaska
5af4552511 qt5: build Qt libraries and applications with qmake
Fixes #3795
2020-07-03 13:48:55 +02:00
Norman Feske
5249f3358f Move Solo5 to genode-world
Fixes #3761
2020-06-29 14:25:27 +02:00
Norman Feske
ef741ef80d Change pixel format to 32 bits per pixel
Until now, Genode's framebuffer session interface was based on the
RGB565 pixel format. This patch changes the pixel format to 32-bit
XRGB where the X part is ignored. It adapts all graphical applications
and device drivers accordingly.

The patch also adjusts the users of the drivers_interactive packages,
assigning 64 MiB RAM and 1500 caps to the drivers subsystem, which is
sufficient for covering high resolutions at 32 bits per pixel and to
accommodate multi-component USB HID input stacks.

Fixes #3784
2020-06-29 14:22:29 +02:00
Josef Söntgen
6fc7ed55cf Replace 'rom_block' with 'vfs_block'
Issue #3781.
2020-06-29 14:22:28 +02:00
Josef Söntgen
ec711b008e Replace 'ram_block' with 'vfs_block'
Issue #3781.
2020-06-29 14:22:28 +02:00
Josef Söntgen
e5b00d89fb depot_autopilot: test case for vfs_block
Issue #3781.
2020-06-22 09:50:51 +02:00
Norman Feske
c8322ffd2a decorator: fix cap-upgrade handling
This commit fixes the 'Out_of_caps' handling. The previous version
mistakenly upgraded the RAM instead the caps as response. The problem
could be triggered by the 'decorator_stress.run' script.
2020-06-22 09:39:40 +02:00
Norman Feske
7a97cd70aa Rename nit_fader to gui_fader
Issue #3778
2020-06-22 09:39:40 +02:00
Norman Feske
48b4891f6e Rename nit_fb to gui_fb
Issue #3778
2020-06-22 09:39:40 +02:00
Norman Feske
98f39c698f Rename "Nitpicker" service name to "Gui"
Issue #3778
2020-06-22 09:39:39 +02:00
Christian Prochaska
2f47bbde30 qt5: use VFS pipe plugin
Fixes #3759
2020-05-27 11:56:46 +02:00
Norman Feske
77a875735a fs_query.run: adjust quota for seL4 2020-05-18 10:16:15 +02:00
Christian Helmuth
589b416ca8 Remove misleading "pipe" utility and test
If a "cat" tool as simple as the removed one is needed, it should be
implemented with Goa, only depend on libc/posix (*not* base), and be
named "simple_cat". Up to today, the misleading naming of the removed
tool, tricked me into believing "test-pipe" tests POSIX pipes, which it
did not!
2020-05-18 10:16:13 +02:00
Norman Feske
c39a342fe5 Remove use of <configfile> feature of init
Issue #3753
2020-05-18 10:16:13 +02:00
Norman Feske
07502ce6bb Remove Python2
Fixes #3751
2020-05-18 10:16:13 +02:00
Norman Feske
48b2456845 util/token.h: fix possible out-of-bounds read
The 'WHITESPACE' case of the _calc_len method wrongly accessed the
character before checking upper bound of the token. The problem is fixed
by switching the order of both conditions.

Fixes #3756
2020-05-18 10:16:12 +02:00
Norman Feske
9d67f9fc8e Remove Allocator_guard
This patch removes old 'Allocator_guard' utility and replaces its use
with the modern 'Constrained_ram_allocator'.

The adjustment of core in this respect has the side effect of a more
accurate capability accounting in core's CPU, TRACE, and RM services.
In particular, the dataspace capabilities needed for core-internal
allocations via the 'Sliced_heap' are accounted to the client now.
The same goes for nitpicker and nic_dump as other former users of the
allocator guard. Hence, the patch also touches code at the client and
server sides related to these services.

The only remaining user of the 'Allocator_guard' is the Intel GPU
driver. As the adaptation of this component would be too invasive
without testing, this patch leaves this component unchanged by keeping a
copy of the 'allocator_guard.h' locally at the component.

Fixes #3750
2020-05-18 10:16:12 +02:00
Norman Feske
1bf796d69a Remove Rust support
Fixes #3488
2020-04-24 14:37:57 +02:00
Norman Feske
f14cc2edab Replace use of ram_fs by VFS server
Issue #3734
2020-04-21 16:24:37 +02:00
Christian Helmuth
c783764d0b Region-map attach/detach stress depot_autopilot test
Issue #3715
2020-04-17 12:40:13 +02:00
Christian Helmuth
cc4e21e7a7 Fix some details in run scripts
- don't use 'qemu -serial mon:stdio' anymore as it no longer works as
  expected
- use "bash -l" with [terminal] to read user's profile configuration,
  e.g., PATH settings
- added missing boot modules and cap quotas
2020-04-17 12:40:13 +02:00
Norman Feske
7bf47b1982 base-linux: boost max open fds to the hard rlimit
This patch increases the default limit of the maximum number of open
file descriptors to the hard limit of the system. This is needed for
complex scenarios, which require more FDs than the default of 1024
at core.

Related to issue #3581

Fixes #3721
2020-04-17 12:40:12 +02:00
Norman Feske
42a77c531a sculpt: remove noux runtime from inspect view
Issue #3696
2020-04-17 12:39:32 +02:00
Norman Feske
ca5c25ac04 sculpt: replace log-noux instance by stdin2out
Issue #3696
2020-04-17 12:39:32 +02:00
Norman Feske
9c95e4bb4f sculpt: replace noux-based e2fsprogs by fs_utils
With this patch, Sculpt executes the e2fs file-system utilities
directly instead of hosting them within the noux runtime.

Issue #3696
2020-04-17 12:39:32 +02:00
Christian Helmuth
69080014b0 depot_autopilot: test case for entrypoint
Test for entrypoint destruction and signalling.

Issue #3704
2020-04-17 12:39:32 +02:00
Stefan Kalkowski
f051065582 Retire OMAP4 support
Fix #2850
2020-04-17 12:39:32 +02:00
Norman Feske
208294b0d3 Turn pkg/noux-system into pkg/system_shell
The new package does no longer require noux.

Issue #3696
2020-03-26 11:38:59 +01:00
Norman Feske
e3bc77c386 Remove noux from SSH exec terminal
This patch replaces the former Noux instance by a sub init that hosts
the combination of VFS + fs_rom + bash. If bash exits, the whole sub
init exits, which implicitly tears down the terminal session used by the
sub init. The latter is expected by the test sequence.

Issue #3696
2020-03-26 11:38:56 +01:00
Norman Feske
cacbad1bd8 Remove noux from ssh_terminal.run
Issue #3696
2020-03-26 11:38:56 +01:00
Norman Feske
cc8552f81e Remove noux_vfs_audit.run
This run script was merely a development vehicle.

Issue #3696
2020-03-26 11:38:56 +01:00
Norman Feske
34a60b56f6 Remove noux from fs_query.run
Issue #3696
2020-03-26 11:38:56 +01:00
Norman Feske
25f7fdcb40 Remove noux from vfs_import.run
Issue #3696
2020-03-26 11:38:56 +01:00
Norman Feske
b6d3063ada Remove noux and cpu_sampler_noux from autopilot
Issue #3696
2020-03-26 11:38:56 +01:00
Norman Feske
e67f389da1 Add fork test to depot autopilot 2020-03-26 11:38:56 +01:00
Norman Feske
4ebc164c11 Add execve test to depot autopilot 2020-03-26 11:38:56 +01:00
Stefan Kalkowski
3a862334fc depot_autopilot: re-enable test-fs_packet on rpi
Fixes #3249
2020-03-26 11:38:55 +01:00
Norman Feske
25c85fab18 sculpt: version 20.03
This patch increases the Sculpt version to avoid the risk of binary
compatibility clashes with index files published for the just-released
Sculpt 20.02 version.
2020-03-26 11:38:53 +01:00
Norman Feske
bbe1bf9c3a fs_query.run: increase timeout
This is apparently needed for base-foc on Qemu/x86.
2020-02-27 14:46:59 +01:00
Norman Feske
904651ada9 sculpt: version 20.02 2020-02-27 14:46:59 +01:00
Norman Feske
1d3ce93107 sculpt: leitzentrale user-interface redesign
Issue #3650
2020-02-27 14:46:59 +01:00
Norman Feske
5eaaee0dbe text_area: a simple text viewer / editor
The new text_area component is able to view and edit files.
Internally, it employs a menu_view for the graphics output.

Only basic notepad-like text-editing functions are supported.

At the current time, it is solely meant as a companion of the Sculpt
manager.

Issue #3650
2020-02-27 14:46:58 +01:00
Norman Feske
b2bc718c1f fs_query: report 'writeable' attribute for files 2020-02-27 14:46:58 +01:00
Christian Helmuth
604f4c666b Remove Timed_semaphore from libc incl test package
Issue #3550
2020-02-10 14:21:47 +01:00
Alexander Boettcher
72f5f9d133 sculpt_manager: apply affinity-space to runtime
Issue #3599
2020-02-04 15:51:10 +01:00
Christian Helmuth
24435e9ca1 Run TCP bulk tests on all Qemu platforms
This explicitly includes ARM32/64.
2019-12-19 17:01:43 +01:00
Alexander Boettcher
3011dc5876 sculpt: add vbox5 generic package as option
Fixes #3574
2019-12-19 17:00:47 +01:00
Roman Iten
6145cdcf37 run: close connection to spawned processes on kill
From the man page of expect:

> Both expect and interact will detect when the current process exits
> and implicitly do a close.  But if you kill the process by, say, "exec
> kill  $pid",  you  will need to explicitly call close.

Fixes #3569
2019-12-19 17:00:47 +01:00
Norman Feske
2aa6471608 test/depot_query: add test for zero-sized archives
This test covers the situation where depot_query evaluates depot content
that is incompletely extracted. In particular, if the 'archives' file
already exists but has a size of zero, depot_query would produce a
page fault. This situation can be manually provoked by deliberately
creating a zero-sized archives file for any otherwise correct pkg.

This patch also fixes the success indicator of the test. It wrongly
matched an early line of the log output.

Issue #3557
2019-12-19 16:59:02 +01:00
Martin Stein
3655ea77a3 depot_autopilot: rework log matching
* The log history of a test is stored as a whole for the lifetime of the test.
* Matching of the log history against log patterns is done correctly now
  (previously, a pattern like "AAB" on an input like "AAAB" wouldn't have
  triggered).
* Use memcmp, memcpy, memmove instead of the former character-wise operations.
* Sanitizing of log input and log patterns now works more generic through the
  new Filter class for all replacements/removals.
* Sanitizing is done as soon as a string is available and remains for the
  lifetime of the test.
* Sanitizing doesn't interfer with the matching algorithm.
* Decomposing into small clearly named functions.

Ref #3555
2019-12-19 16:59:02 +01:00
Norman Feske
18b621c2fe sculpt: version 19.11 2019-11-19 14:54:14 +01:00
Sebastian Sumpf
ad12b42d1c gems: depot autopilot enable gcov for ARMv8
issue #3537
2019-11-19 14:45:39 +01:00
Norman Feske
5bb366513b Remove os/src/app/cli_monitor
Nowadays, we use standard command-line tools like vim to edit init
configurations dynamically, which alleviates the need for a custom CLI.
The CLI-monitor component was too limited for use cases like Sculpt
anyway.

The patch also removes the ancient (and untested for long time)
terminal_mux.run script, which used to be the only remaining user of the
CLI monitor.

Issue #3512
2019-11-19 14:23:56 +01:00
Norman Feske
4bcc75365c Remove gems/src/app/launcher
The graphical launcher remained unused for a few years now. It is not
suitable for systems as flexible as Sculpt OS.

Issue #3512
2019-11-19 14:23:56 +01:00
Alexander Boettcher
6fe80c3cc7 sculpt: add lock screen/GUI support
Fixes #3491
2019-09-09 15:25:45 +02:00
Christian Prochaska
ab017607a2 tool chain: TLS support
Fixes #3418
2019-09-02 16:29:33 +02:00
Christian Helmuth
4911acedf5 sculpt: version 19.08 2019-08-28 14:22:33 +02:00
Christian Helmuth
701b1d41e8 input_filter: update character generators
This adds complete character-generator configurations for English (US),
German (Germany and Switzerland), and French (France and Switzerland).
The configs are manually amended and stripped-down versions of
xkb2ifcfg generated configs.

Issue #3483
2019-08-28 14:22:33 +02:00
Norman Feske
1dd68ce04b Adjust quotas for seL4 2019-08-28 14:19:45 +02:00
Johannes Kliemann
1bdd18a196 ada-runtime: update to 1.1 2019-08-21 13:25:25 +02:00
Sid Hussmann
eaefcc2c6f ssh: add exec channel and exit on interactive
This commit implements the ssh exec channel request. It also handles
some shortcommings on the interactive channel like exit and concurrent
session establishments.

Pipes into the channel do not work yet. E.g.:
echo foobar | ssh noux@localhost -p 5555 "cat > /rw/test.txt"

The issue described with FIXME in Ssh::Server::incoming_connection()
could not be reproduced and might have been fixed with the improved
file descriptor handling.

Fixes #3401
2019-08-13 12:02:03 +02:00
Christian Helmuth
fbae7767b4 sculpt: version 19.07 2019-07-09 09:06:54 +02:00
Norman Feske
6380ad1c80 pkg/vbox5-nova-sculpt: clipboard support
To enable the clipboard for a VM, add the following node to the
<Hardware> sub node of your machine.vbox configuration:

  <Clipboard mode="Bidirectional"/>

Issue #3437
2019-07-09 08:58:39 +02:00
Norman Feske
605f9abf96 sculpt: integrate global clipboard
Issue #3437
2019-07-09 08:58:39 +02:00
Norman Feske
1fe9b07c99 wm: forwarding of clipboard ROM/Report sessions
The labels of clipboard ROM and clipboard report sessions of WM clients
must be consistent with the client's nitpicker label. Hence, we must
route those sessions through the window manager, analogously to the
approach taken for shape reports in #3165.

Issue #3437
2019-07-09 08:58:38 +02:00
Christian Prochaska
71ce1442c8 run: enable 'imx7d_sabre' in network tests
Fixes #3434
2019-07-09 08:58:38 +02:00
Norman Feske
417191bdbd wm.run: build window_layouter
This change makes the wm.run more convenient as testbed for developing
the window layouter.
2019-07-09 08:58:38 +02:00
Norman Feske
c00666b7e8 depot_deploy.run: integrate recall_fs
This is needed to deploy the current version of the window_layouter pkg.
2019-07-09 08:58:38 +02:00
Christian Helmuth
63e69d35e0 Disable unsupported autopilot tests on rpi3 2019-07-09 08:58:38 +02:00
Norman Feske
8625146011 sculpt: use secondary CPU for leitzentrale
By decoupling the leitzentrale from the (contended) boot CPU, the fading
on F12 interferes much less with animations like nano3d deployed in the
runtime.

Fixes #3268
2019-07-09 08:55:24 +02:00
Sebastian Sumpf
3a2de0d9a3 depot_autopilot: limit dynamic to 286 MB
* also set test-libc to 256 MB (seems to be enough)
* fixes memory issues on platforms with 512 MB RAM

issue #3407
2019-07-09 08:55:23 +02:00
Sebastian Sumpf
c107aba913 depot_autopilot: add ARM 64-bit support
issue #3407
2019-07-09 08:55:22 +02:00
Christian Helmuth
ab3efc0a33 depot_autopilot: skip test-fs_packet on rpi 2019-06-13 12:22:50 +02:00
Martin Stein
5a59d295a4 depot_autopilot.run: relax test timeout
There are still nightly tests like test-tcp_bulk_lxip on sel4 x86_64 qemu
that manage to hit the test timeout of the run script although the test was
successful. So, raise the extra time added by the run script to 30 seconds.

Ref #3411
2019-06-13 12:22:49 +02:00
Martin Stein
fe5ada85cb depot_autopilot.run: max nr of tests per boot
Some platforms (sel4 imx6/imx7) cannot manage to execute all tests in a single
boot. Thus, we re-boot them periodically after a given maximum number of tests
to avoid that arbitrary tests always fail due to the long uptime and not due to
the tests themselves.

If the maximum number of tests is set to 0, no limit is applied.

Fixes #3411
2019-06-13 12:22:49 +02:00
Christian Helmuth
1b059649ff depot_autopilot: skip test-spark_exception on ARM
Issue #3395
2019-06-13 12:22:49 +02:00
Josef Söntgen
eaed28f68d sculpt: document version string constraint
Issue #3403.
2019-06-13 12:22:49 +02:00