cli: switch to click

.gitignore

@@ -1,2 +1,3 @@
 *.swp
 Pipfile.lock
+build

Pipfile

@@ -6,6 +6,9 @@ name = "pypi"
 [packages]
 pyyaml = "*"
 semantic-version = "*"
+click = "*"
+minecraft-package-manager = {editable = true, path = "."}
+columnar = "*"
 
 [dev-packages]
 

pyproject.toml

@@ -9,4 +9,4 @@ name = "minecraft-package-manager"
 version = "0.0.1"
 
 [project.scripts]
-mpm = "mpm.main:main"
+mpm = "mpm.commands:mpm"

src/mpm/commands/__init__.py

@@ -0,0 +1,16 @@
+from . import server, repo, config
+from mpm.config import Config
+import click
+
+@click.group()
+@click.option("--config", type=click.Path(readable=True, writable=False,
+                                          dir_okay=False))
+@click.pass_context
+def mpm(ctx, config):
+    ctx.ensure_object(dict)
+    ctx.obj['config'] = Config(config)
+    pass
+
+mpm.add_command(config.config)
+mpm.add_command(server.server)
+mpm.add_command(repo.repo)

src/mpm/commands/config.py

@@ -0,0 +1,14 @@
+import click
+import sys
+import yaml
+from mpm.config import Dumper
+
+@click.group(help='Configure MPM')
+def config():
+    pass
+
+@config.command(help='Show the current configuration')
+@click.pass_context
+def show(ctx):
+    sys.stdout.write("# {}\n".format(ctx.obj['config'].path))
+    yaml.dump(ctx.obj['config'].config, sys.stdout, Dumper=Dumper)

src/mpm/commands/repo.py

@@ -0,0 +1,77 @@
+import click
+import os
+from mpm.model import Plugin
+from mpm.config import RepoParamType
+import pathlib
+from columnar import columnar
+
+@click.group(help='Add and import plugins to repositories')
+def repo():
+    pass
+
+@repo.command('list', help='List configured repositories')
+@click.pass_context
+def list_(ctx):
+    for repo in ctx.obj['config'].repositories():
+        click.echo("{} ({})".format(click.style(repo.name,bold=True), repo.path))
+        rows = []
+        for plugin in sorted(repo.plugins()):
+            rows.append([
+                click.style(plugin.name, fg='green'),
+                click.style(plugin.version, fg='yellow')
+            ])
+        if len(rows) > 0:
+            click.echo(columnar(rows, ['Plugin', 'Version'], no_borders=True))
+        else:
+            click.echo("No plugins found.")
+        for badFile in sorted(repo.badFiles()):
+            click.echo('\tWARNING: Unknown file {}'.format(badFile))
+
+@repo.command(help='Add a new repository')
+@click.pass_context
+@click.argument("name")
+@click.argument("path", type=click.Path(path_type=pathlib.Path))
+def add(ctx, name, path):
+    path.mkdir(parents=True, exist_ok=True)
+    ctx.obj['config'].add_repository(name, path)
+    ctx.obj['config'].save()
+    click.echo("Added repository {} from {}".format(name, path))
+
+@repo.command('import', help='Import a plugin to a repository')
+@click.argument('repo', type=RepoParamType())
+@click.argument('paths', type=click.Path(exists=True, readable=True,
+                                        path_type=pathlib.Path), nargs=-1)
+def import_(repo, paths):
+    plugins = []
+    searchPaths = list(paths)
+    for path in searchPaths:
+        try:
+            if path.is_dir():
+                searchPaths += list(path.glob("*"))
+                continue
+        except PermissionError:
+            click.echo("Cannot read {}".format(path))
+            continue
+        try:
+            plugins.append(Plugin(path))
+        except:
+            click.echo("Bad plugin filename {}".format(path))
+
+    if len(plugins) == 0:
+        click.echo("No plugins found.")
+        return
+
+    click.echo('Found the following plugins:')
+    for plugin in plugins:
+        click.echo("\t{} {}".format(click.style(plugin.name, fg='green'),
+                                    click.style(plugin.version, fg='yellow')))
+    click.echo("Import plugins into {} ({})? [y/N] ".format(repo.name,
+                                                           repo.path), nl=False)
+    answer = click.getchar().lower()
+    if answer == "y":
+        with click.progressbar(plugins, label='Importing') as bar:
+            for plugin in bar:
+                repo.importPlugin(plugin)
+        click.echo("Imported!")
+    else:
+        click.echo("Cancelled.")

src/mpm/commands/server.py

@@ -0,0 +1,150 @@
+import click
+from mpm.model import *
+import pathlib
+from mpm.config import ServerParamType
+
+@click.group(help='Add, remove, and synchronize Servers')
+def server():
+    pass
+
+@server.command(help='Add a new server')
+@click.pass_context
+@click.argument('name')
+@click.argument('path', type=click.Path(dir_okay=True, exists=True))
+def add(ctx, name, path):
+    ctx.obj['config'].add_server(name, path)
+    ctx.obj['config'].save()
+    click.echo("Added server {} in {}".format(name, path))
+
+@server.command('list', help='List configured servers')
+@click.pass_context
+def list_(ctx):
+    for server in ctx.obj['config'].servers():
+        click.echo('{} ({}):'.format(server.name, server.path))
+        serverPath = pathlib.Path(server.path)
+        if not serverPath.exists():
+            click.echo(click.style("\tServer path does not exist", fg='red'))
+            continue
+        pluginPath = pathlib.Path(server.path+'/plugins')
+        if not pluginPath.exists():
+            click.echo(click.style("\tServer plugin directory does not exist", fg='red'))
+            continue
+        outdatedLinks = []
+        missing = []
+        installed = []
+        unmanaged = []
+        conflicts = []
+        for state in sorted(server.pluginStates(ctx.obj['config'].repositories())):
+            if isinstance(state, OutdatedSymlink):
+                outdatedLinks.append(state)
+            elif isinstance(state, Installed):
+                installed.append(state)
+            elif isinstance(state, MissingVersions):
+                missing.append(state)
+            elif isinstance(state, UnmanagedFile):
+                unmanaged.append(state)
+            elif isinstance(state, SymlinkConflict):
+                conflicts.append(state)
+
+        click.echo("Installed plugins:")
+        for state in sorted(installed):
+            click.echo("\t{} {}: {}".format(state.plugin.name, state.plugin.versionSpec, state.currentVersion))
+        click.echo("Oudated symlinks:")
+        for state in sorted(outdatedLinks):
+            click.echo("\t{} {}: Current: {} Wanted: {}".format(state.plugin.name, state.plugin.versionSpec, state.currentVersion, state.wantedVersion))
+        click.echo("Missing plugins:")
+        for state in sorted(missing):
+            click.echo("\t{}: {}".format(state.plugin.name, state.plugin.versionSpec))
+        click.echo("Unmanaged files:")
+        for state in sorted(unmanaged):
+            click.echo("\t{}".format(state.filename))
+        click.echo("Symlink Conflicts:")
+        for state in sorted(conflicts):
+            click.echo("\t{}.jar".format(state.plugin.name))
+
+@server.command(help='Add a plugin to a server')
+@click.pass_context
+@click.argument('server', type=ServerParamType())
+@click.argument('plugins', nargs=-1)
+def add_plugin(ctx, server, plugins):
+    pluginQueue = []
+    for pluginSpec in plugins:
+        if os.path.exists(pluginSpec):
+            plugin = Plugin(pluginSpec)
+            pluginSpec = PluginSpec(plugin.name, str(plugin.version))
+        else:
+            allVersions = []
+            for repo in ctx.obj['config'].repositories():
+                allVersions += repo.versionsForPlugin(pluginSpec)
+            pluginSpec = PluginSpec(pluginSpec, list(reversed(sorted(allVersions)))[0])
+
+        pluginQueue.append(pluginSpec)
+
+    click.echo("Resolved plugin list:")
+    for pluginSpec in pluginQueue:
+        click.echo("\t{} {}".format(click.style(pluginSpec.name, fg='green'),
+                                    click.style(pluginSpec.versionSpec,
+                                    fg='yellow')))
+    click.echo("Add these plugins to server {}? [y/N] ".format(server.name),
+               nl=False)
+    answer = click.getchar().lower()
+    if answer == "y":
+        for pluginSpec in pluginQueue:
+            try:
+                server.add_plugin(pluginSpec)
+            except KeyError:
+                click.echo("{} already added!".format(pluginSpec))
+        ctx.obj['config'].update_server(server.name, server.config)
+        ctx.obj['config'].save()
+        click.echo("Added!")
+    else:
+        click.echo("Cancelled.")
+
+
+@server.command(help="Synchronize a server's plugins")
+@click.pass_context
+def sync(ctx):
+    for server in ctx.obj['config'].servers():
+        click.echo('{} ({}):'.format(server.name, server.path))
+        outdatedLinks = []
+        available = []
+        missing = []
+        for state in sorted(server.pluginStates(ctx.obj['config'].repositories())):
+            if isinstance(state, OutdatedSymlink):
+                outdatedLinks.append(state)
+            elif isinstance(state, Available):
+                available.append(state)
+            elif isinstance(state, MissingVersions):
+                missing.append(state)
+
+        click.echo("Plugins to update:")
+        for state in sorted(outdatedLinks):
+            click.echo("\t{} {}: Current: {} Wanted: {}".format(state.plugin.name, state.plugin.versionSpec, state.currentVersion, state.wantedVersion))
+        click.echo("New plugins to install:")
+        for state in sorted(available):
+            click.echo("\t{}: {}".format(state.plugin.name, state.plugin.version))
+        click.echo("Missing plugins:")
+        for state in sorted(missing):
+            click.echo("\t{} {}".format(click.style(state.plugin.name, fg='red'),
+                                   click.style(state.plugin.versionSpec,
+                                   fg='yellow')))
+        if len(outdatedLinks) > 0 or len(available) > 0:
+            click.echo("Apply changes? [y/N]", nl=False)
+            answer = click.getchar().lower()
+            if answer == "y":
+                with click.progressbar(length=len(available)+len(outdatedLinks),
+                                       label='Synchronizing') as bar:
+                    i = 0
+                    for state in available:
+                        server.installVersion(state.plugin)
+                        server.updateSymlinkForPlugin(state.plugin, state.plugin.version)
+                        i += 1
+                        bar.update(i)
+                    for state in outdatedLinks:
+                        server.updateSymlinkForPlugin(state.plugin, state.wantedVersion)
+                        i += 1
+                        bar.update(i)
+            else:
+                click.echo("Not applying changes.")
+        else:
+            click.echo("No changes to apply.")

src/mpm/config.py

@@ -0,0 +1,85 @@
+import os
+import yaml
+import click
+from mpm.repo import Repo
+from mpm.server import Server
+from mpm.model import *
+
+try:
+        from yaml import CLoader as Loader, CDumper as Dumper
+except ImportError:
+        from yaml import Loader, Dumper
+
+DEFAULT_CONFIG = """
+repositories: {}
+servers: {}
+"""
+
+class RepoParamType(click.ParamType):
+    name = "repo-name"
+
+    def convert(self, value, param, ctx):
+        if isinstance(value, Repo):
+            return value
+        return ctx.obj['config'].repository(value)
+
+class ServerParamType(click.ParamType):
+    name = "server-name"
+
+    def convert(self, value, param, ctx):
+        if isinstance(value, Repo):
+            return value
+        return ctx.obj['config'].server(value)
+
+class Config():
+
+    def __init__(self, path):
+        if path is None:
+            path = os.path.expanduser('~/mpm.yaml')
+        self.path = path
+        with open(path, 'r') as fd:
+            self.yaml = yaml.load(fd, Loader=Loader)
+        self.config = yaml.load(DEFAULT_CONFIG, Loader=Loader)
+        if isinstance(self.yaml, dict):
+            self.config.update(self.yaml)
+
+    def repository(self, name):
+        return Repo(name, self.config['repositories'][name])
+
+    def repositories(self):
+        return [Repo(name, c) for (name, c) in self.config['repositories'].items()]
+
+    def update_repository(self, name, config):
+        self.config['repositories'][name] = config
+
+    def add_repository(self, name, path):
+        if name in self.config['repositories']:
+            raise ValueError('Repository already exists')
+
+        self.update_repository(name, {
+            'path': str(path)
+        })
+
+    def servers(self):
+        return [Server(name, c) for (name, c) in self.config['servers'].items()]
+
+    def server(self, name):
+        return Server(name, self.config['servers'][name])
+
+    def update_server(self, server, config):
+        self.config['servers'][server] = config
+
+    def add_server(self, name, path):
+        if name in self.config['servers']:
+            raise ValueError("Server already exists")
+
+        self.update_server(name, {
+            'path': path,
+            'plugins': [],
+            'inherit': []
+        })
+
+    def save(self):
+        stream = open(self.path, 'w')
+        yaml.dump(self.config, stream, Dumper=Dumper)
+        stream.close()

src/mpm/main.py

@@ -1,267 +0,0 @@
-#!/bin/env python
-import argparse
-import pathlib
-import sys
-import yaml
-import os
-
-from mpm.repo import Repo
-from mpm.server import Server
-from mpm.model import *
-
-try:
-        from yaml import CLoader as Loader, CDumper as Dumper
-except ImportError:
-        from yaml import Loader, Dumper
-
-DEFAULT_CONFIG = """
-repositories: {}
-servers: {}
-"""
-
-class Config():
-
-    def __init__(self, path):
-        if path is None:
-            path = os.path.expanduser('~/mpm.yaml')
-        self.path = path
-        with open(path, 'r') as fd:
-            self.yaml = yaml.load(fd, Loader=Loader)
-        self.config = yaml.load(DEFAULT_CONFIG, Loader=Loader)
-        if isinstance(self.yaml, dict):
-            self.config.update(self.yaml)
-
-    def repository(self, name):
-        return Repo(name, self.config['repositories'][name])
-
-    def repositories(self):
-        return [Repo(name, c) for (name, c) in self.config['repositories'].items()]
-
-    def update_repository(self, name, config):
-        self.config['repositories'][name] = config
-
-    def add_repository(self, name, path):
-        if name in self.config['repositories']:
-            raise ValueError('Repository already exists')
-
-        self.update_repository(name, {
-            'path': path
-        })
-
-    def servers(self):
-        return [Server(name, c) for (name, c) in self.config['servers'].items()]
-
-    def server(self, name):
-        return Server(name, self.config['servers'][name])
-
-    def update_server(self, server, config):
-        self.config['servers'][server] = config
-
-    def add_server(self, name, path):
-        if name in self.config['servers']:
-            raise ValueError("Server already exists")
-
-        self.update_server(name, {
-            'path': path,
-            'plugins': [],
-            'inherit': []
-        })
-
-    def save(self):
-        stream = open(self.path, 'w')
-        yaml.dump(self.config, stream, Dumper=Dumper)
-        stream.close()
-
-def do_repo_add(args, config):
-    if not os.path.exists(args.path):
-        os.makedirs(args.path)
-    config.add_repository(args.name, args.path)
-    config.save()
-    print("Added repository {}".format(args.path))
-
-def do_repo_list(args, config):
-    for repo in config.repositories():
-        print("{} ({})".format(repo.name, repo.path))
-        for plugin in sorted(repo.plugins()):
-            print('\t', plugin.name, '\t', plugin.version)
-        for badFile in sorted(repo.badFiles()):
-            print('\tWARNING: Unknown file', badFile)
-
-def do_repo_import(args, config):
-    repo = config.repository(args.name)
-    plugins = []
-    for path in args.path:
-        try:
-            plugins.append(Plugin(path))
-        except:
-            print("Bad plugin filename {}".format(path))
-
-    if len(plugins) == 0:
-        print("No plugins found.")
-
-    print('Found the following plugins:')
-    for plugin in plugins:
-        print("\t{} {}".format(plugin.name, plugin.version))
-    print("Import plugins into {}? [y/N]".format(repo.name))
-    answer = input().lower()
-    if answer == "y":
-        for plugin in plugins:
-            repo.importPlugin(plugin)
-        print("Imported!")
-    else:
-        print("Cancelled.")
-
-def do_server_add(args, config):
-    config.add_server(args.name, args.path)
-    config.save()
-    print("Added server {} in {}".format(args.name, args.path))
-
-def do_server_list(args, config):
-    for server in config.servers():
-        print('{} ({}):'.format(server.name, server.path))
-        outdatedLinks = []
-        missing = []
-        installed = []
-        unmanaged = []
-        conflicts = []
-        for state in sorted(server.pluginStates(config.repositories())):
-            if isinstance(state, OutdatedSymlink):
-                outdatedLinks.append(state)
-            elif isinstance(state, Installed):
-                installed.append(state)
-            elif isinstance(state, MissingVersions):
-                missing.append(state)
-            elif isinstance(state, UnmanagedFile):
-                unmanaged.append(state)
-            elif isinstance(state, SymlinkConflict):
-                conflicts.append(state)
-
-        print("Installed plugins:")
-        for state in sorted(installed):
-            print("\t{} {}: {}".format(state.plugin.name, state.plugin.versionSpec, state.currentVersion))
-        print("Oudated symlinks:")
-        for state in sorted(outdatedLinks):
-            print("\t{} {}: Current: {} Wanted: {}".format(state.plugin.name, state.plugin.versionSpec, state.currentVersion, state.wantedVersion))
-        print("Missing plugins:")
-        for state in sorted(missing):
-            print("\t{}: {}".format(state.plugin.name, state.plugin.versionSpec))
-        print("Unmanaged files:")
-        for state in sorted(unmanaged):
-            print("\t{}".format(state.filename))
-        print("Symlink Conflicts:")
-        for state in sorted(conflicts):
-            print("\t{}.jar".format(state.plugin.name))
-
-def do_server_add_plugin(args, config):
-    server = config.server(args.server)
-    plugins = []
-    for pluginSpec in args.plugin:
-
-        if os.path.exists(pluginSpec):
-            plugin = Plugin(pluginSpec)
-            pluginSpec = PluginSpec(plugin.name, str(plugin.version))
-        else:
-            allVersions = []
-            for repo in config.repositories():
-                allVersions += repo.versionsForPlugin(pluginSpec)
-            pluginSpec = PluginSpec(pluginSpec, list(reversed(sorted(allVersions)))[0])
-
-        plugins.append(pluginSpec)
-
-    print("Added {} to {}".format(pluginSpec, server.name))
-    for pluginSpec in plugins:
-        print("\t{} {}".format(pluginSpec.name, pluginSpec.versionSpec))
-    print("Add these plugins to server {}? [y/N]".format(server.name))
-    answer = input().lower()
-    if answer == "y":
-        for pluginSpec in plugins:
-            server.add_plugin(pluginSpec)
-        config.update_server(server.name, server.config)
-        config.save()
-        print("Added!")
-    else:
-        print("Cancelled.")
-
-def do_server_sync(args, config):
-    for server in config.servers():
-        print('{} ({}):'.format(server.name, server.path))
-        outdatedLinks = []
-        available = []
-        for state in sorted(server.pluginStates(config.repositories())):
-            if isinstance(state, OutdatedSymlink):
-                outdatedLinks.append(state)
-            elif isinstance(state, Available):
-                available.append(state)
-
-        print("Plugins to update:")
-        for state in sorted(outdatedLinks):
-            print("\t{} {}: Current: {} Wanted: {}".format(state.plugin.name, state.plugin.versionSpec, state.currentVersion, state.wantedVersion))
-        print("New plugins to install:")
-        for state in sorted(available):
-            print("\t{}: {}".format(state.plugin.name, state.plugin.version))
-
-        if len(outdatedLinks) > 0 or len(available) > 0:
-            print("Apply changes? [y/N]")
-            answer = input().lower()
-            if answer == "y":
-                for state in available:
-                    server.installVersion(state.plugin)
-                    server.updateSymlinkForPlugin(state.plugin, state.plugin.version)
-                    print("Installed {} {}".format(state.plugin.name, state.plugin.version))
-                for state in outdatedLinks:
-                    server.updateSymlinkForPlugin(state.plugin, state.wantedVersion)
-                    print("Updated {} to {}".format(state.plugin.name, state.wantedVersion))
-            else:
-                print("Not applying changes.")
-        else:
-            print("No changes to apply.")
-
-def main():
-    parser = argparse.ArgumentParser(description='Paper Plugin Sync')
-    parser.add_argument('--config', dest='config_path', type=Config)
-    subparsers = parser.add_subparsers()
-    repos = subparsers.add_parser('repo')
-    repo_sub = repos.add_subparsers()
-
-    repo_add = repo_sub.add_parser('add')
-    repo_add.add_argument('name', help='Name of the repository')
-    repo_add.add_argument('path', help='Where to add a repository or create a new one')
-    repo_add.set_defaults(func=do_repo_add)
-
-    repo_list = repo_sub.add_parser('list')
-    repo_list.set_defaults(func=do_repo_list)
-
-    repo_import = repo_sub.add_parser('import')
-    repo_import.add_argument('name', help='Name of the repository')
-    repo_import.add_argument('path', nargs="+", help='Path of the plugin to import')
-    repo_import.set_defaults(func=do_repo_import)
-
-    servers = subparsers.add_parser('server')
-    server_sub = servers.add_subparsers()
-    server_add = server_sub.add_parser('add')
-    server_add.add_argument('name', help='Name for the server')
-    server_add.add_argument('path', help='Path to your server\'s root directory')
-    server_add.set_defaults(func=do_server_add)
-
-    server_list = server_sub.add_parser('list')
-    server_list.set_defaults(func=do_server_list)
-
-    server_add_plugin = server_sub.add_parser('add-plugin')
-    server_add_plugin.add_argument('server', help='Name of server to modify')
-    server_add_plugin.add_argument('plugin', nargs='+', help='Plugin file or spec to install')
-    server_add_plugin.set_defaults(func=do_server_add_plugin)
-
-    server_sync = server_sub.add_parser('sync')
-    server_sync.set_defaults(func=do_server_sync)
-
-    args = parser.parse_args()
-
-    config = Config(args.config_path)
-
-    if 'func' not in args:
-        parser.print_usage()
-    else:
-        args.func(args, config)
-
-if __name__ == "__main__":
-    main()

src/mpm/plugin-sync.py

@@ -1,73 +0,0 @@
-#!/bin/env python
-import yaml
-import os
-import sys
-from model import *
-
-try:
-        from yaml import CLoader as Loader, CDumper as Dumper
-except ImportError:
-        from yaml import Loader, Dumper
-
-conf = yaml.load(open('plugins.yml', 'r'), Loader=Loader)
-
-for (serverName,server) in conf['servers'].items():
-    changeset = []
-    if len(sys.argv) > 1 and serverName not in sys.argv[1:]:
-        continue
-    if 'pluginPath' not in server:
-        continue
-    if not os.path.exists(server['pluginPath']):
-        print("Missing plugin path for {}: {}".format(serverName, server['pluginPath']))
-    else:
-        print("=== Updating server {}".format(serverName))
-        pluginSpecs = {}
-        for inherited in server.get('inherit', ()):
-            for inheritedPlugin in conf['servers'][inherited]['plugins']:
-                pluginSpecs[inheritedPlugin['name']] = PluginSpec(inheritedPlugin['name'], str(inheritedPlugin.get('version', '*')))
-
-        for pluginConf in server.get('plugins', ()):
-            pluginSpecs[pluginConf['name']] = PluginSpec(pluginConf['name'], str(pluginConf.get('version', '*')))
-
-        repo = Repo(server['pluginPath'], pluginSpecs.values())
-        outdatedLinks = []
-        missing = []
-        installed = []
-        unmanaged = []
-        conflicts = []
-        for state in repo.pluginStates():
-            if isinstance(state, OutdatedSymlink):
-                outdatedLinks.append(state)
-            elif isinstance(state, Installed):
-                installed.append(state)
-            elif isinstance(state, MissingVersions):
-                missing.append(state)
-            elif isinstance(state, UnmanagedFile):
-                unmanaged.append(state)
-            elif isinstance(state, SymlinkConflict):
-                conflicts.append(state)
-
-        print("Installed plugins:")
-        for state in sorted(installed):
-            print("\t{} {}: {}".format(state.plugin.name, state.plugin.versionSpec, state.currentVersion))
-        print("Oudated symlinks:")
-        for state in sorted(outdatedLinks):
-            print("\t{} {}: Current: {} Wanted: {}".format(state.plugin.name, state.plugin.versionSpec, state.currentVersion, state.wantedVersion))
-        print("Missing plugins:")
-        for state in sorted(missing):
-            print("\t{}: {}".format(state.plugin.name, state.plugin.versionSpec))
-        print("Unmanaged files:")
-        for state in sorted(unmanaged):
-            print("\t{}".format(state.filename))
-        print("Symlink Conflicts:")
-        for state in sorted(conflicts):
-            print("\t{}.jar".format(state.plugin.name))
-
-        if len(outdatedLinks) > 0:
-            print("Apply changes? [y/N]")
-            answer = input().lower()
-            if answer == "y":
-                for state in outdatedLinks:
-                    repo.updateSymlinkForPlugin(state.plugin, state.wantedVersion)
-            else:
-                print("Not applying changes.")

src/mpm/server.py

@@ -1,5 +1,6 @@
 from mpm.model import *
 import shutil
+import pathlib
 
 class Server:
     def __init__(self, name, config):
@@ -70,17 +71,18 @@ class Server:
         return pluginSemver
 
     def versionsForPlugin(self, pluginName, repos):
-        plugins = os.listdir(os.path.join(self.pluginPath, 'versions'))
-        for pluginJar in plugins:
-            if pluginJar.startswith(pluginName):
-                prefix = pluginName + '-'
-                suffix = '.jar'
-                jarVersion = pluginJar[len(prefix):len(pluginJar)-len(suffix)]
-                try:
-                    pluginSemver = Version.coerce(jarVersion)
-                except ValueError:
-                    pluginSemver = jarVersion
-                yield pluginSemver
+        if os.path.exists(os.path.join(self.pluginPath, 'versions')):
+            plugins = os.listdir(os.path.join(self.pluginPath, 'versions'))
+            for pluginJar in plugins:
+                if pluginJar.startswith(pluginName):
+                    prefix = pluginName + '-'
+                    suffix = '.jar'
+                    jarVersion = pluginJar[len(prefix):len(pluginJar)-len(suffix)]
+                    try:
+                        pluginSemver = Version.coerce(jarVersion)
+                    except ValueError:
+                        pluginSemver = jarVersion
+                    yield pluginSemver
 
     def updateSymlinkForPlugin(self, plugin, version):
         pluginFilename = os.path.join(self.pluginPath, 'versions/{}-{}.jar'.format(plugin.name, version))
@@ -92,5 +94,7 @@ class Server:
         os.symlink(linkDst, pluginSymlink)
 
     def installVersion(self, plugin):
+        if not os.path.exists(os.path.join(self.pluginPath, 'versions')):
+            os.path.mkdir(os.path.join(self.pluginPath, 'versions'))
         dest = os.path.join(self.pluginPath, 'versions/{}-{}.jar'.format(plugin.name, plugin.version))
         shutil.copyfile(plugin.path, dest)