Corrected build instructions and made virtuelenv name dynamic

docs/build-instructions.md

@@ -22,9 +22,16 @@ If someone does not want the download, he can manually choose a specterd-binary
 
 So let's cover the build of the specterd-binary first. Below is a manual description of the build-process. There are acripts which are doing this but they are partially optimized for the CI-system. Check the `pyinstaller/build-*` scripts for details.
 
-### specterd Linux and MacOS
+First set the virtualenv:
 
+```bash
+virtualenv --python=python3 .buildenv
+source .buildenv/bin/activate 
 ```
+
+### specterd Linux and MacOS
+
+```bash
 cd pyinstaller
 # prerequisites
 pip3 install -r requirements.txt --require-hashes
@@ -50,7 +57,7 @@ pyinstaller.exe specterd.spec
 
 ### Electron Linux
 The prerequisite for an electron build is a successfull specterd-build above. So now we need to bake the hash and a way how to retrieve the specterd-file when the electron-app is started:
-```
+```bash
 cd electron
 # You have to decide about a version
 npm i

pyinstaller/README.md

@@ -9,16 +9,19 @@ This will update the file hash and version name the Specter Desktop app expects
 
 # Pyinstaller build
 
-`cd` into this directory (`specter-desktop/pyinstaller`) and install requirements:
+Install requirements:
 
 ```bash
-$ pip3 install -r requirements.txt --require-hashes
+virtualenv --python=python3 .buildenv
+source .buildenv/bin/activate 
+cd pyinstaller
+pip3 install -r requirements.txt --require-hashes
 ```
 
 Now run:
 
 ```bash
-$ pyinstaller specterd.spec
+pyinstaller specterd.spec
 ```
 
 And for HWIBridge, run: 

src/cryptoadvance/specter/managers/service_manager.py

@@ -308,13 +308,15 @@ def get_service_x_dirs(cls, x):
         # Those pathes are absolute. Let's make them relative:
         arr = [Path(*path.parts[-6:]) for path in arr]
 
+        virtuelenv_path = os.path.relpath(os.environ["VIRTUAL_ENV"], ".")
+
         if os.name == "nt":
-            virtualenv_search_path = Path("..", ".buildenv", "Lib")
+            virtualenv_search_path = Path(virtuelenv_path, "Lib")
         else:
             # let's calcultate so that we get something like:
             # virtualenv_search_path = Path("..", ".buildenv", "lib", "python3.8")
             site_package = [path for path in sys.path if "site-packages" in path][0]
-            site_package = Path("..", ".buildenv", *(Path(site_package).parts[-3:-1]))
+            site_package = Path(virtuelenv_path, *(Path(site_package).parts[-3:-1]))
             virtualenv_search_path = site_package
 
         # ... and as the classes are in the .buildenv (see build-unix.sh) let's add ..