maybe fixes https://github.com/spesmilo/electrum/issues/7640
Looks like by default pip is ignoring the locally available setuptools and wheel,
and downloading the latest ones from the internet at build time...
https://pip.pypa.io/en/stable/reference/build-system/pyproject-toml/?highlight=no-build-isolation#disabling-build-isolationhttps://stackoverflow.com/a/62889268
> When making build requirements available, pip does so in an isolated environment. That is, pip does not install those requirements into the user’s site-packages, but rather installs them in a temporary directory which it adds to the user’s sys.path for the duration of the build. This ensures that build requirements are handled independently of the user’s runtime environment. For example, a project that needs a recent version of setuptools to build can still be installed, even if the user has an older version installed (and without silently replacing that version).
>
> In certain cases, projects (or redistributors) may have workflows that explicitly manage the build environment. For such workflows, build isolation can be problematic. If this is the case, pip provides a --no-build-isolation flag to disable build isolation. Users supplying this flag are responsible for ensuring the build environment is managed appropriately (including ensuring that all required build dependencies are installed).
If only it were that easy!
If we add the "--no-build-isolation" flag, it becomes our responsibility to install *all* build time deps,
hence we now have "requirements-build-makepackages.txt".
This diff should not change what is matched by gitignore
(e.g. `build/` matches `contrib/build-wine/build/`).
I am experimenting with reusing gitignore as dockerignore which uses
slightly different semantics.
related: https://github.com/spesmilo/electrum/pull/7431#discussion_r677541811
Load DLLs from inner 'electrum' dir instead of '.dlls'.
To make it consistent with where we expect libsecp256k1 (.dll/.so) be.
(note that while in case of libsecp we specifically already search the main dir,
without this change, other DLLs such as libusb or libzbar would not be found there)
Python 3.8 changed where DLLs are searched for.
see https://docs.python.org/3/whatsnew/3.8.html#bpo-36085-whatsnew
This potentially affect our binaries when we start shipping python 3.8+, however that is not being addressed here. This commit simply addresses the usecase of running from source, on Windows, using python 3.8.
On older Python, a user could build/obtain DLLs and place them anywhere on the system %PATH%, however this no longer works with py3.8, as %PATH% is no longer checked.
With py3.8, instead, we now check if there is a folder named '.dlls' in the top-level project directory, and if so, register that as an additional search path.
A user who wants to run Electrum from source on Windows using python 3.8 or later, with their custom DLLs, should manually create the '.dlls' folder and put their DLLs there. If they also want to switch between e.g. python 3.7 and 3.8, they should also include '.dlls' in the system %PATH%.
When using Electrum, interesting DLLs include at least libsecp256k1.dll, libusb-1.0.dll, libzbar-0.dll.
Benefits of this rewrite include:
- support of disconnecting / reconnecting a device without having
to close the wallet, even in a different USB socket
- support of multiple keepkey / trezor devices, both during wallet
creation and general use
- wallet is watching-only dynamically according to whether the
associated device is currently plugged in or not
MEIPASS is PythonInstaller specific and won't work for py2app
modified: lib/util.py
modified: .gitignore
modified: lib/util.py
modified: setup-release.py
SomberNight