Improve Windows/Powershell compatibility

README.md

@@ -84,6 +84,8 @@ Work-in-progress, but usable and useful.
 
 ## Installation and upgrade
 
+LINUX:
+
 Assuming you have a `~/bin/` directory in path, this will install(/upgrade) the
 tool in a `_venv` and link it into your bin directory:
 
@@ -94,6 +96,24 @@ make
 rm -f ~/bin/hsm-secrets; ln -s $(pwd)/_venv/bin/hsm-secrets ~/bin/
 ```
 
+WINDOWS:
+
+```
+git pull
+python3 -m venv _venv
+_venv\Scripts\activate
+pip install -r requirements.txt
+python setup.py install -e .
+```
+
+Then add to PowerShell profile something like this:
+
+```
+$env:HSM_SECRETS_CONFIG = "~\hsm-secrets\hsm-conf.yml"
+Set-Alias -Name hsm-secrets -Value "~\hsm-secrets\_venv\Scripts\hsm-secrets"
+```
+...and restart PowerShell.
+
 ## Authentication
 
 Default HSM authentication method depends on the subcommand:

hsm_secrets/main.py

@@ -59,7 +59,7 @@ def cli(ctx: click.Context, config: str|None, quiet: bool, yklabel: str|None, hs
             raise click.UsageError(f"No configuration file found in env or {str(default_paths)}. Please specify a config file with -c/--config or set the {env_var} environment variable.")
 
     cli_info("Using config file: " + click.style(config, fg='cyan'), err=True)
-    conf = load_hsm_config(config)
+    conf = load_hsm_config(os.path.expanduser(config))
 
     assert conf.general.master_device, "No master YubiHSM serial specified in config file."