updated bootstrap script for non developers

[zeffii]

the long form of the script... node readall() should now be read()

import re
import os
import zipfile
import urllib
import json
import bpy
from urllib.request import urlopen

def get_raw_url_from_gist_id(gist_id):
    gist_id = str(gist_id)
    url = 'https://api.github.com/gists/' + gist_id
    found_json = urlopen(url).readall().decode()
    wfile = json.JSONDecoder()
    wjson = wfile.decode(found_json)

    files_flag = 'files'
    file_names = list(wjson[files_flag].keys())
    file_name = file_names[0]
    return wjson[files_flag][file_name]['raw_url']


def get_gist_as_string(gist_id):
    url = get_raw_url_from_gist_id(gist_id)
    conn = urlopen(url).readall().decode()
    return conn

def get_sv():
    print("getting sverchok bootstrapper")
    string_load = get_gist_as_string("5a4440e7455940174ab9")

    svbl = bpy.data.texts.new('sverchok bootloader')
    svbl.write(string_load)
    print("obtained bootstrapper code from github")

    # until a tidier solution comes along
    ctx = bpy.context.copy()
    ctx['edit_text'] = svbl # specify the text datablock to execute
    bpy.ops.text.run_script(ctx)
    print("execution bootstrapper complete")

get_sv()

[zeffii]

that could be truncated even further to:

import re
import os
import zipfile
import urllib

import bpy
from urllib.request import urlopen


def get_sv():
    url = "".join([
        "https://gist.githubusercontent.com/zeffii/",
        "5a4440e7455940174ab9/raw/",
        "39fcbbd3692da87b920ab48fb2f6c664aca74af4/",
        "bootstrap.py"])

    print("getting sverchok bootstrapper")
    string_load = urlopen(url).readall().decode()

    svbl = bpy.data.texts.new('sverchok bootloader')
    svbl.write(string_load)
    print("obtained bootstrapper code from github")

    ctx = bpy.context.copy()
    ctx['edit_text'] = svbl  # specify the text datablock to execute
    bpy.ops.text.run_script(ctx)
    print("execution bootstrapper complete")

get_sv()

The above script does the following (beware, this is a like a matroska doll, scripts inside scripts):

• download the real bootstrap script
• the script it produces
  • downloads the zip
  • renames it to sverchok
  • places it in scripts/addons
  • enables it

Thus:
small script -> gets bigger script -> bigger script knows how to download, unpack and install Sverchok.

[zeffii]

apparently this script doesn't work on win10 64 build of Blender. error 'HTTPResponse has no attribute 'readall' .. but works fine on ubuntu64

[zeffii]

works on 2.93 or 3.0

import re
import os
import zipfile
import urllib

import bpy
from urllib.request import urlopen

# 2.93  or 3.0  ... you don't need to set this manually anymore.
MAJOR, MINOR = bpy.app.version_file[0:2]
blender_version = f"{MAJOR}.{MINOR}"

url = "https://gist.githubusercontent.com/zeffii/5a4440e7455940174ab9/raw/bootstrap.py"

def get_sv():
    print("getting sverchok bootstrapper")
    string_load = urlopen(url).read().decode()
    
    # depending on the current version...
    new_string_load = re.sub("version=(\d\.\d+)", f"version={blender_version}", string_load)

    svbl = bpy.data.texts.new('sverchok bootloader')
    svbl.write(new_string_load)
    print("obtained bootstrapper code from github")

    ctx = bpy.context.copy()
    ctx['edit_text'] = svbl  # specify the text datablock to execute
    bpy.ops.text.run_script(ctx)
    print("execution bootstrapper complete")

get_sv()

[luckychris]

i got this error when running on my macbook:

Traceback (most recent call last):
File "/Users/cd/Downloads/install_sverchok.blend/InstallSverchok", line 34, in
File "/Applications/Blender.app/Contents/Resources/3.0/scripts/modules/bpy/ops.py", line 130, in call
ret = _op_call(self.idname_py(), C_dict, kw, C_exec, C_undo)
RuntimeError: Error: Traceback (most recent call last):
File "/Applications/Blender.app/Contents/Resources/3.0/scripts/modules/addon_utils.py", line 351, in enable
mod = import(module_name)
ModuleNotFoundError: No module named 'sverchok'

Error: Python script failed, check the message in the system console

[zeffii]

If you used the "install Addon" button in Blender preferences, then Blender will put the add-on in a system-specific folder.

https://docs.blender.org/manual/en/latest/advanced/blender_directory_layout.html#platform-dependent-paths

as you use osx, if you get the message no module named sverchok, then Blender is not finding a folder named sverchok
in any of the scripts subdirs in https://docs.blender.org/manual/en/latest/advanced/blender_directory_layout.html#macos

[zeffii]

maybe Blender 3.0 needs to be given permissions to modify the filesystem ? else Python can not create a directory to unzip the sverchok source correctly.

[luckychris]

Maybe - but why did all other adons work?🙈

[zeffii]

beats me.

[luckychris]

Or don’t they create folders? I don’t know. You are the expert.

[zeffii]

well the bootstrap script will, i think, specifically look in the first addon folder shown in that list, and look for a folder called 'sverchok'. If that folder's 3.0/scripts/addons doesn't contain a folder called "sverchok" then there's nothing to enable.

for example in windows..

[luckychris]

ok, don't know why and don't know how...maybe because i downloaded the newest blender3.0 alpha....but all of a sudden it showed now for the first time the 1.0 version in sverchok and i could enable it. And believe or not ....rendering works too now. But i have no idea why i now could see 1.0 and it worked. Whenever i saw 1.0 version until now, i wasn't able to enable it.

[luckychris]

But...(after downloading a fresh 2.93) i got this error, when installing 1.0 beta .....

[luckychris]

i don't know if it is interesting for you, just checked the folder structure of 3.0 which works now, it looks like this:

folder name is sverchok-0 ...i think you ...and i ....didn't expect that. But that's how it works. I did not rename that.

[luckychris]

2.93 in comparison to that...(does not work) looks like this:

[zeffii]

rename it to sverchok , the extra -1.0.0-beta.2 turns the folder into an invalid module name i think... for the enable step

[zeffii]

correct, i have no explanation at the moment for the folder being called sverchok-0 unless that's what happens if you have two folders called sverchok, there might be some autorenaming of new folders..

[luckychris]

i renamed it and when i tried to enable, i got this:

[luckychris]

then i was brave, maybe reckless...and renamed it to sverchok-1...and i got:

now i am feeling ripped....

[luckychris]

ok, clean try:

i have:

after installing and before enabling it looks like this:

then tried to enable and got:

[luckychris]

next "clean try" was: renaming it to sverchok BEFORE enabling, same result with "no module named 'sverchok-1' ...it's weird.

[zeffii]

if there was no other folder in scripts/addons called sverchok, then there should be no reason for Blender to automatically rename that folder, this suggests to me that there are parallel folders ( system specific as listed above ) that do have a folder named sverchok and blender attempts to avoid name collisions over all the potential folders.

but i'm not certain.

[luckychris]

nope, that's why i wrote "clean try" and copied the folder structure as screenshot for you. There were no sverchok folders.

[zeffii]

well.. now you've seen the dirtier side of add-on development.

[luckychris]

I just cannot believe I am the only one with a macOS having this problem….🙈

[zeffii]

https://gist.github.com/zeffii/a325ab87931114311198c4571322b82b

this is a slightly modified that drops features i planned but never used.

[0nzlo]

ok, don't know why and don't know how...maybe because i downloaded the newest blender3.0 alpha....but all of a sudden it showed now for the first time the 1.0 version in sverchok and i could enable it. And believe or not ....rendering works too now. But i have no idea why i now could see 1.0 and it worked. Whenever i saw 1.0 version until now, i wasn't able to enable it.

Wow this works!! Thank you haha...After trying with many versions I gave it a try and it worked.