diff --git a/.flake8 b/.flake8
index 79a16af..84bd549 100644
--- a/.flake8
+++ b/.flake8
@@ -1,2 +1,5 @@
 [flake8]
-max-line-length = 120
\ No newline at end of file
+max-line-length = 120
+ignore = E741
+exclude = .git,__pycache__
+max-complexity = 10
diff --git a/poetry.lock b/poetry.lock
index dd26d8e..c61a133 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -20,52 +20,6 @@ docs = ["furo", "sphinx", "zope.interface", "sphinx-notfound-page"]
 tests = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "mypy", "pytest-mypy-plugins", "zope.interface"]
 tests_no_zope = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "mypy", "pytest-mypy-plugins"]
 
-[[package]]
-name = "cairocffi"
-version = "1.2.0"
-description = "cffi-based cairo bindings for Python"
-category = "main"
-optional = false
-python-versions = ">=3.6"
-
-[package.dependencies]
-cffi = ">=1.1.0"
-
-[package.extras]
-doc = ["sphinx", "sphinx-rtd-theme"]
-test = ["pytest-runner", "pytest-cov", "pytest-flake8", "pytest-isort"]
-xcb = ["xcffib (>=0.3.2)"]
-
-[[package]]
-name = "cairosvg"
-version = "2.5.2"
-description = "A Simple SVG Converter based on Cairo"
-category = "main"
-optional = false
-python-versions = ">=3.5"
-
-[package.dependencies]
-cairocffi = "*"
-cssselect2 = "*"
-defusedxml = "*"
-pillow = "*"
-tinycss2 = "*"
-
-[package.extras]
-doc = ["sphinx", "sphinx-rtd-theme"]
-test = ["pytest-runner", "pytest-cov", "pytest-flake8", "pytest-isort"]
-
-[[package]]
-name = "cffi"
-version = "1.15.0"
-description = "Foreign Function Interface for Python calling C code."
-category = "main"
-optional = false
-python-versions = "*"
-
-[package.dependencies]
-pycparser = "*"
-
 [[package]]
 name = "click"
 version = "7.1.2"
@@ -93,30 +47,6 @@ python-versions = "*"
 [package.dependencies]
 colorama = {version = "*", markers = "platform_system == \"Windows\""}
 
-[[package]]
-name = "cssselect2"
-version = "0.4.1"
-description = "cssselect2"
-category = "main"
-optional = false
-python-versions = ">=3.6"
-
-[package.dependencies]
-tinycss2 = "*"
-webencodings = "*"
-
-[package.extras]
-doc = ["sphinx", "sphinx-rtd-theme"]
-test = ["pytest", "pytest-cov", "pytest-flake8", "pytest-isort", "coverage"]
-
-[[package]]
-name = "defusedxml"
-version = "0.7.1"
-description = "XML bomb protection for Python stdlib modules"
-category = "main"
-optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
-
 [[package]]
 name = "flask"
 version = "1.1.4"
@@ -147,24 +77,6 @@ python-versions = ">=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*"
 [package.extras]
 docs = ["sphinx"]
 
-[[package]]
-name = "html5lib"
-version = "1.1"
-description = "HTML parser based on the WHATWG HTML specification"
-category = "main"
-optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
-
-[package.dependencies]
-six = ">=1.9"
-webencodings = "*"
-
-[package.extras]
-all = ["genshi", "chardet (>=2.2)", "lxml"]
-chardet = ["chardet (>=2.2)"]
-genshi = ["genshi"]
-lxml = ["lxml"]
-
 [[package]]
 name = "importlib-metadata"
 version = "4.8.3"
@@ -251,14 +163,6 @@ python-versions = ">=3.6"
 [package.dependencies]
 pyparsing = ">=2.0.2,<3.0.5 || >3.0.5"
 
-[[package]]
-name = "pillow"
-version = "8.4.0"
-description = "Python Imaging Library (Fork)"
-category = "main"
-optional = false
-python-versions = ">=3.6"
-
 [[package]]
 name = "pluggy"
 version = "1.0.0"
@@ -301,14 +205,6 @@ category = "main"
 optional = false
 python-versions = "*"
 
-[[package]]
-name = "pycparser"
-version = "2.21"
-description = "C parser in Python"
-category = "main"
-optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-
 [[package]]
 name = "pyparsing"
 version = "3.0.6"
@@ -320,17 +216,6 @@ python-versions = ">=3.6"
 [package.extras]
 diagrams = ["jinja2", "railroad-diagrams"]
 
-[[package]]
-name = "pyphen"
-version = "0.11.0"
-description = "Pure Python module to hyphenate text"
-category = "main"
-optional = false
-python-versions = ">=3.6"
-
-[package.extras]
-test = ["pytest", "pytest-cov", "pytest-flake8", "pytest-isort", "coverage"]
-
 [[package]]
 name = "pytest"
 version = "6.2.5"
@@ -425,21 +310,6 @@ postgresql_psycopg2cffi = ["psycopg2cffi"]
 pymysql = ["pymysql (<1)", "pymysql"]
 sqlcipher = ["sqlcipher3-binary"]
 
-[[package]]
-name = "tinycss2"
-version = "1.1.1"
-description = "A tiny CSS parser"
-category = "main"
-optional = false
-python-versions = ">=3.6"
-
-[package.dependencies]
-webencodings = ">=0.4"
-
-[package.extras]
-doc = ["sphinx", "sphinx-rtd-theme"]
-test = ["pytest", "pytest-cov", "pytest-flake8", "pytest-isort", "coverage"]
-
 [[package]]
 name = "toml"
 version = "0.10.2"
@@ -464,36 +334,6 @@ category = "main"
 optional = false
 python-versions = "*"
 
-[[package]]
-name = "weasyprint"
-version = "52.5"
-description = "The Awesome Document Factory"
-category = "main"
-optional = false
-python-versions = ">=3.6"
-
-[package.dependencies]
-cairocffi = ">=0.9.0"
-CairoSVG = ">=2.4.0"
-cffi = ">=0.6"
-cssselect2 = ">=0.1"
-html5lib = ">=0.999999999"
-Pillow = ">=4.0.0"
-Pyphen = ">=0.9.1"
-tinycss2 = ">=1.0.0"
-
-[package.extras]
-doc = ["sphinx", "sphinx-rtd-theme"]
-test = ["pytest-runner", "pytest-cov", "pytest-flake8", "pytest-isort"]
-
-[[package]]
-name = "webencodings"
-version = "0.5.1"
-description = "Character encoding aliases for legacy web content"
-category = "main"
-optional = false
-python-versions = "*"
-
 [[package]]
 name = "werkzeug"
 version = "1.0.1"
@@ -529,7 +369,7 @@ testing = ["pytest (>=4.6)", "pytest-checkdocs (>=2.4)", "pytest-flake8", "pytes
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.6.1"
-content-hash = "05801cd5e8b55510bd46861fd13f119c0269d3b343e22aa86c261eca50455d09"
+content-hash = "d42ac98f37e9df3afbff04bb958a53bedd346fdfe0ea81b0bd4464eeb96f6837"
 
 [metadata.files]
 atomicwrites = [
@@ -540,65 +380,6 @@ attrs = [
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 ]
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 click = [
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@@ -611,14 +392,6 @@ colorful = [
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-    {file = "Pillow-8.4.0-pp36-pypy36_pp73-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:c70e94281588ef053ae8998039610dbd71bc509e4acbc77ab59d7d2937b10698"},
-    {file = "Pillow-8.4.0-pp37-pypy37_pp73-macosx_10_10_x86_64.whl", hash = "sha256:3862b7256046fcd950618ed22d1d60b842e3a40a48236a5498746f21189afbbc"},
-    {file = "Pillow-8.4.0-pp37-pypy37_pp73-manylinux_2_17_i686.manylinux2014_i686.whl", hash = "sha256:a4901622493f88b1a29bd30ec1a2f683782e57c3c16a2dbc7f2595ba01f639df"},
-    {file = "Pillow-8.4.0-pp37-pypy37_pp73-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:84c471a734240653a0ec91dec0996696eea227eafe72a33bd06c92697728046b"},
-    {file = "Pillow-8.4.0-pp37-pypy37_pp73-win_amd64.whl", hash = "sha256:244cf3b97802c34c41905d22810846802a3329ddcb93ccc432870243211c79fc"},
-    {file = "Pillow-8.4.0.tar.gz", hash = "sha256:b8e2f83c56e141920c39464b852de3719dfbfb6e3c99a2d8da0edf4fb33176ed"},
-]
 pluggy = [
     {file = "pluggy-1.0.0-py2.py3-none-any.whl", hash = "sha256:74134bbf457f031a36d68416e1509f34bd5ccc019f0bcc952c7b909d06b37bd3"},
     {file = "pluggy-1.0.0.tar.gz", hash = "sha256:4224373bacce55f955a878bf9cfa763c1e360858e330072059e10bad68531159"},
@@ -826,18 +567,10 @@ py = [
 pycountry = [
     {file = "pycountry-20.7.3.tar.gz", hash = "sha256:81084a53d3454344c0292deebc20fcd0a1488c136d4900312cbd465cf552cb42"},
 ]
-pycparser = [
-    {file = "pycparser-2.21-py2.py3-none-any.whl", hash = "sha256:8ee45429555515e1f6b185e78100aea234072576aa43ab53aefcae078162fca9"},
-    {file = "pycparser-2.21.tar.gz", hash = "sha256:e644fdec12f7872f86c58ff790da456218b10f863970249516d60a5eaca77206"},
-]
 pyparsing = [
     {file = "pyparsing-3.0.6-py3-none-any.whl", hash = "sha256:04ff808a5b90911829c55c4e26f75fa5ca8a2f5f36aa3a51f68e27033341d3e4"},
     {file = "pyparsing-3.0.6.tar.gz", hash = "sha256:d9bdec0013ef1eb5a84ab39a3b3868911598afa494f5faa038647101504e2b81"},
 ]
-pyphen = [
-    {file = "pyphen-0.11.0-py3-none-any.whl", hash = "sha256:e3c1b1d05deaa31acdd78e2e24005402358feb7a4b407c4af7e5cc2e41c4d608"},
-    {file = "pyphen-0.11.0.tar.gz", hash = "sha256:e2c3ed82c3a04317df5102addafe89652b0876bc6c6265f5dd4c3efaf02315e8"},
-]
 pytest = [
     {file = "pytest-6.2.5-py3-none-any.whl", hash = "sha256:7310f8d27bc79ced999e760ca304d69f6ba6c6649c0b60fb0e04a4a77cacc134"},
     {file = "pytest-6.2.5.tar.gz", hash = "sha256:131b36680866a76e6781d13f101efb86cf674ebb9762eb70d3082b6f29889e89"},
@@ -922,10 +655,6 @@ sqlalchemy = [
     {file = "SQLAlchemy-1.4.28-cp39-cp39-win_amd64.whl", hash = "sha256:853de08e881dae0305647dd61b4429758f11d1bf02a9faf02793cad44bb2e0d5"},
     {file = "SQLAlchemy-1.4.28.tar.gz", hash = "sha256:7fdb7b775fb0739d3e71461509f978beb788935bc0aa9e47df14837cb33e5226"},
 ]
-tinycss2 = [
-    {file = "tinycss2-1.1.1-py3-none-any.whl", hash = "sha256:fe794ceaadfe3cf3e686b22155d0da5780dd0e273471a51846d0a02bc204fec8"},
-    {file = "tinycss2-1.1.1.tar.gz", hash = "sha256:b2e44dd8883c360c35dd0d1b5aad0b610e5156c2cb3b33434634e539ead9d8bf"},
-]
 toml = [
     {file = "toml-0.10.2-py2.py3-none-any.whl", hash = "sha256:806143ae5bfb6a3c6e736a764057db0e6a0e05e338b5630894a5f779cabb4f9b"},
     {file = "toml-0.10.2.tar.gz", hash = "sha256:b3bda1d108d5dd99f4a20d24d9c348e91c4db7ab1b749200bded2f839ccbe68f"},
@@ -938,14 +667,6 @@ wcwidth = [
     {file = "wcwidth-0.2.5-py2.py3-none-any.whl", hash = "sha256:beb4802a9cebb9144e99086eff703a642a13d6a0052920003a230f3294bbe784"},
     {file = "wcwidth-0.2.5.tar.gz", hash = "sha256:c4d647b99872929fdb7bdcaa4fbe7f01413ed3d98077df798530e5b04f116c83"},
 ]
-weasyprint = [
-    {file = "WeasyPrint-52.5-py3-none-any.whl", hash = "sha256:3433d657049a65d7d63f545fd71f5efa8aae7f05d24e49e01a757973fd3799f1"},
-    {file = "WeasyPrint-52.5.tar.gz", hash = "sha256:b37ea02d75ca04babd7becad7341426be332ae560d8f02d664bfa1e9afb18481"},
-]
-webencodings = [
-    {file = "webencodings-0.5.1-py2.py3-none-any.whl", hash = "sha256:a0af1213f3c2226497a97e2b3aa01a7e4bee4f403f95be16fc9acd2947514a78"},
-    {file = "webencodings-0.5.1.tar.gz", hash = "sha256:b36a1c245f2d304965eb4e0a82848379241dc04b865afcc4aab16748587e1923"},
-]
 werkzeug = [
     {file = "Werkzeug-1.0.1-py2.py3-none-any.whl", hash = "sha256:2de2a5db0baeae7b2d2664949077c2ac63fbd16d98da0ff71837f7d1dea3fd43"},
     {file = "Werkzeug-1.0.1.tar.gz", hash = "sha256:6c80b1e5ad3665290ea39320b91e1be1e0d5f60652b964a3070216de83d2e47c"},
diff --git a/pyproject.toml b/pyproject.toml
index a7aa0f0..ed28daa 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -17,7 +17,6 @@ schwifty = "^2020.9.0"
 prompt-toolkit = "^3.0.8"
 pytest = "^6.1.2"
 python-dateutil = "^2.8.1"
-WeasyPrint = "^52.4"
 
 
 [tool.poetry.dev-dependencies]
@@ -28,3 +27,14 @@ build-backend = "poetry.core.masonry.api"
 
 [tool.poetry.scripts]
 schmeckels = "schmeckels.cli:main"
+
+[tool.isort]
+profile = "black"
+multi_line_output = 3
+line_length = 120
+default_section = "THIRDPARTY"
+known_first_party = []
+known_third_party = []
+
+[tool.black]
+line-length = 120
diff --git a/schmeckels/autosort.py b/schmeckels/autosort.py
index 33b76f4..bbc9439 100644
--- a/schmeckels/autosort.py
+++ b/schmeckels/autosort.py
@@ -1,22 +1,27 @@
 #! /usr/bin/env python3
-from sqlalchemy import create_engine
-from sqlalchemy.orm import sessionmaker
-from sqlalchemy.ext.declarative import declarative_base
-from schmeckels.models import Tag, Transaction
-from schmeckels.helper import get_session, create_tag, get_rules
 import re
 import sys
+
 import click
 import colorful as cf
+from sqlalchemy import create_engine
+from sqlalchemy.ext.declarative import declarative_base
+from sqlalchemy.orm import sessionmaker
+
+from schmeckels.helper import create_tag, get_rules, get_session
+from schmeckels.models import Tag, Transaction
 
 
 @click.command(name="autosort")
-@click.option("--profile", "-p")
 @click.option("--dry-run", default=False, is_flag=True)
 @click.option("--verbose", "-v", default=False, is_flag=True)
-def command(profile, dry_run, verbose):
-    session = get_session(profile)
-    rules = get_rules(profile)
+def command(dry_run, verbose):
+    session = get_session()
+    rules = get_rules()
+
+    if not rules:
+        print(cf.red("Empty rules file."))
+        sys.exit(0)
 
     unsorted = session.query(Transaction).filter(Transaction.tags == None).all()
     print(cf.yellow("Found {} unsorted transcations".format(len(unsorted))))
@@ -33,7 +38,7 @@ def command(profile, dry_run, verbose):
                 for tag_label in taglist:
                     tag = session.query(Tag).filter(Tag.name == tag_label).first()
                     if not tag and not dry_run:
-                        tag = create_tag(tag_label, profile, session)
+                        tag = create_tag(tag_label, session)
                     transaction.tags.append(tag)
                     new.append(transaction)
 
diff --git a/schmeckels/banks.py b/schmeckels/banks.py
index c5fd4bd..703dfeb 100644
--- a/schmeckels/banks.py
+++ b/schmeckels/banks.py
@@ -1,9 +1,11 @@
 #! /usr/bin/env python3
-import mt940
 import csv
-from schmeckels import models
 from datetime import datetime
 
+import mt940
+
+from schmeckels import models
+
 SUPPORTED_BANKS = (
     ("dkb", "DKB"),
     ("sparkasse-mt940", "Sparkasse MT940"),
diff --git a/schmeckels/categories.py b/schmeckels/categories.py
index d60c07b..3436fda 100644
--- a/schmeckels/categories.py
+++ b/schmeckels/categories.py
@@ -1,12 +1,13 @@
 #! /usr/bin/env python3
-from sqlalchemy import create_engine
-from sqlalchemy.orm import sessionmaker
-from sqlalchemy.ext.declarative import declarative_base
-from schmeckels.models import *
 import sys
 
 from prompt_toolkit.completion import FuzzyWordCompleter
 from prompt_toolkit.shortcuts import prompt
+from sqlalchemy import create_engine
+from sqlalchemy.ext.declarative import declarative_base
+from sqlalchemy.orm import sessionmaker
+
+from schmeckels.models import *
 
 engine = create_engine("sqlite:///app.db")
 Base = declarative_base()
diff --git a/schmeckels/cli.py b/schmeckels/cli.py
index e1e35bc..0df4ce7 100644
--- a/schmeckels/cli.py
+++ b/schmeckels/cli.py
@@ -1,17 +1,15 @@
 #! /usr/bin/env python3
-import click
 import os
 import sys
 from pathlib import Path
 
-
-from schmeckels import importer, serve, autosort, validate, info, sort, models, report
-
-from schmeckels.helper import build_database_filename, create_dirs, build_rules_filename
+import click
 from sqlalchemy import create_engine
+from sqlalchemy.ext.declarative import declarative_base
 from sqlalchemy.orm import sessionmaker
 
-from sqlalchemy.ext.declarative import declarative_base
+from schmeckels import autosort, importer, info, models, serve, sort, validate
+from schmeckels.helper import build_database_filename, build_rules_filename, get_data_dir
 
 __version__ = "0.0.1"
 
@@ -22,15 +20,20 @@ def cli():
 
 
 @cli.command(name="init")
-@click.argument("profile_name", required=True)
-def init(profile_name):
-    create_dirs()
+def init():
+    data_dir = get_data_dir()
 
-    db_path = build_database_filename(profile_name)
-    rule_path = build_rules_filename(profile_name)
+    # make sure folder exists
+    try:
+        os.mkdir(data_dir)
+    except FileExistsError:
+        pass
 
-    if os.path.exists(db_path) and os.path.exists(rule_path):
-        print(f"Profile '{profile_name}' already exists")
+    db_path = build_database_filename(data_dir)
+    rule_path = build_rules_filename(data_dir)
+
+    if os.path.exists(db_path) or os.path.exists(rule_path):
+        print(f"Init already ran")
         sys.exit(1)
     else:
         # database
@@ -39,7 +42,7 @@ def init(profile_name):
         # rules
         Path(rule_path).touch()
 
-        print(f"Sucessfully create the profile '{profile_name}'")
+        print(f"Sucessfull init at {data_dir}'")
 
 
 def main():
@@ -49,5 +52,5 @@ def main():
     cli.add_command(autosort.command)
     cli.add_command(validate.command)
     cli.add_command(info.command)
-    cli.add_command(report.command)
+    #cli.add_command(report.command)
     cli()
diff --git a/schmeckels/helper.py b/schmeckels/helper.py
index a58b660..ded6895 100644
--- a/schmeckels/helper.py
+++ b/schmeckels/helper.py
@@ -1,13 +1,15 @@
 #! /usr/bin/env python3
+import locale
 import os
-import sys
-import yaml
 import re
-from xdg import XDG_CONFIG_HOME, XDG_DATA_HOME
+import sys
+
+import yaml
 from sqlalchemy import create_engine
 from sqlalchemy.orm import sessionmaker
+from xdg import XDG_CONFIG_HOME, XDG_DATA_HOME
+
 import schmeckels.models
-import locale
 from schmeckels import banks, models
 
 try:
@@ -16,13 +18,9 @@ except ImportError:
     from yaml import Loader
 
 
-CONFIG_DIR = os.path.join(XDG_CONFIG_HOME, "schmeckels")
-DATA_DIR = os.path.join(XDG_DATA_HOME, "schmeckels")
-
-
 def format_amount(d):
     if type(d) is dict:
-        for k,v in d.items():
+        for k, v in d.items():
             amount = v / 100
             d[k] = f"{amount:,.2f}"
         return d
@@ -34,69 +32,50 @@ def format_amount(d):
         raise Exception()
 
 
-
-def create_dirs():
-    for directory in [CONFIG_DIR, DATA_DIR]:
-        try:
-            os.mkdir(directory)
-        except FileExistsError:
-            pass
+def get_data_dir():
+    fallback_dir = os.path.join(XDG_DATA_HOME, "schmeckels")
+    return os.getenv("SCHMECKELS_DIR", fallback_dir)
 
 
-def build_database_filename(profile_name):
-    return f"{DATA_DIR}/{profile_name}.db"
+def build_database_filename(base_path):
+    return f"{base_path}/schmeckels.db"
 
 
-def build_rules_filename(profile_name):
-    return f"{CONFIG_DIR}/{profile_name}.yaml"
+def build_rules_filename(base_path):
+    return f"{base_path}/rules.yaml"
 
 
-def check_single_profile():
-    files = os.listdir(DATA_DIR)
-    if len(files) == 1:
-        return files[0].split(".")[0]
-    else:
-        print("--profile is required when you have more than one profile.")
-        sys.exit(1)
-
-
-def list_profiles():
-    files = os.listdir(DATA_DIR)
-    return [x.split(".")[0] for x in files]
-
-
-def get_session(profile_name):
-    if not profile_name:
-        profile_name = check_single_profile()
-    filename = build_database_filename(profile_name)
+def get_session():
+    data_dir = get_data_dir()
+    filename = build_database_filename(data_dir)
     if os.path.exists(filename) and os.path.isfile(filename):
         engine = create_engine(f"sqlite:///{filename}")
         Session = sessionmaker(bind=engine)
         return Session()
     else:
-        print(f"No database for profile '{profile_name}'. Did you run 'init'?")
+        print(f"No database found in {data_dir}! Did you run 'init'?")
         sys.exit(1)
 
 
-def get_rules(profile_name):
-    if not profile_name:
-        profile_name = check_single_profile()
-    filename = build_rules_filename(profile_name)
+def get_rules():
+    data_dir = get_data_dir()
+    filename = build_rules_filename(data_dir)
     if os.path.exists(filename) and os.path.isfile(filename):
         with open(filename) as fh:
             data = yaml.load(fh, Loader=Loader)
-        for rule in data:
-            if rule.get("name"):
-                rule["name_regex"] = re.compile(rule["name"])
-            if rule.get("description"):
-                rule["desc_regex"] = re.compile(rule["description"])
+        if data:
+            for rule in data:
+                if rule.get("name"):
+                    rule["name_regex"] = re.compile(rule["name"])
+                if rule.get("description"):
+                    rule["desc_regex"] = re.compile(rule["description"])
         return data
     else:
-        print(f"No rules for profile '{profile_name}'. Did you run 'init'?")
+        print(f"No rules.json found in {data_dir}! Did you run 'init'?")
         sys.exit(1)
 
 
-def create_tag(name, profile, session):
+def create_tag(name, session):
     t = session.query(models.Tag).filter(models.Tag.name == name).first()
     if not t:
         t = models.Tag(name=name)
diff --git a/schmeckels/importer.py b/schmeckels/importer.py
index 6a5dd7d..0b69359 100644
--- a/schmeckels/importer.py
+++ b/schmeckels/importer.py
@@ -1,21 +1,22 @@
 #! /usr/bin/env python3
+import sys
+
 import click
+import colorful as cf
 from sqlalchemy import create_engine, desc
 from sqlalchemy.orm import sessionmaker
-from schmeckels.models import Transaction
-from schmeckels.helper import get_session, import_transactions
-import sys
+
 from schmeckels import banks
-import colorful as cf
+from schmeckels.helper import get_session, import_transactions
+from schmeckels.models import Transaction
 
 
 @click.command(name="import")
 @click.option("--filetype", "-t", type=click.Choice([b[0] for b in banks.SUPPORTED_BANKS], case_sensitive=False))
-@click.option("--profile", "-p")
 @click.option("--dry-run", default=False, is_flag=True)
 @click.argument("filename", type=click.Path(exists=True))
-def command(filetype, profile, dry_run, filename):
-    session = get_session(profile)
+def command(filetype, dry_run, filename):
+    session = get_session()
     new = import_transactions(session, filetype, filename)
 
     if dry_run:
diff --git a/schmeckels/info.py b/schmeckels/info.py
index e84f53d..04dbea3 100644
--- a/schmeckels/info.py
+++ b/schmeckels/info.py
@@ -1,35 +1,33 @@
 #! /usr/bin/env python3
-from sqlalchemy import create_engine
-from schmeckels.models import Tag, Transaction
-from schmeckels.helper import get_session, list_profiles, build_database_filename, build_rules_filename
 import sys
+
 import click
+from sqlalchemy import create_engine
+
+from schmeckels.helper import build_database_filename, build_rules_filename, get_data_dir, get_session, get_rules
+from schmeckels.models import Tag, Transaction
 
 
 @click.command(name="info")
 def command():
-    first = True
-    for profile in list_profiles():
-        session = get_session(profile)
-        db_path = build_database_filename(profile)
-        rules_path = build_rules_filename(profile)
+    session = get_session()
+    data_dir = get_data_dir()
+    db_path = build_database_filename(data_dir)
+    rules_path = build_rules_filename(data_dir)
+    rules = get_rules()
 
-        print(f"Profile: {profile}")
-        print(f"     DB: {db_path}")
-        print(f"  Rules: {rules_path}")
+    print(f"     DB: {db_path}")
+    print(f"  Rules: {rules_path}")
 
-        unsorted = session.query(Transaction).filter(Transaction.tags == None).count()
-        transactions = session.query(Transaction).count()
-        tags = session.query(Tag).count()
-        try:
-            unsorted_percent = round(unsorted / (transactions / 100), 1)
-        except ZeroDivisionError:
-            unsorted_percent = 0
+    unsorted = session.query(Transaction).filter(Transaction.tags == None).count()
+    transactions = session.query(Transaction).count()
+    tags = session.query(Tag).count()
+    try:
+        unsorted_percent = round(unsorted / (transactions / 100), 1)
+    except ZeroDivisionError:
+        unsorted_percent = 0
 
-        print(f"Transactions: {transactions}")
-        print(f"    Unsorted: {unsorted} ({unsorted_percent}%)")
-        print(f"        Tags: {tags}")
-    if first:
-        first = False
-    else:
-        print("----------")
+    print(f"Transactions: {transactions}")
+    print(f"    Unsorted: {unsorted} ({unsorted_percent}%)")
+    print(f"        Tags: {tags}")
+    print(f"       Rules: {len(rules)}")
diff --git a/schmeckels/models.py b/schmeckels/models.py
index 9701722..6e37727 100644
--- a/schmeckels/models.py
+++ b/schmeckels/models.py
@@ -1,10 +1,12 @@
 #! /usr/bin/env python3
-from sqlalchemy.ext.declarative import declarative_base
-from sqlalchemy import Column, Integer, String, DateTime, ForeignKey, Table, Boolean
-from sqlalchemy.orm import relationship, backref
-from schmeckels import helper
 from hashlib import md5
 
+from sqlalchemy import Boolean, Column, DateTime, ForeignKey, Integer, String, Table
+from sqlalchemy.ext.declarative import declarative_base
+from sqlalchemy.orm import backref, relationship
+
+from schmeckels import helper
+
 Base = declarative_base()
 
 association_table = Table(
diff --git a/schmeckels/report.py b/schmeckels/report.py
index f4eae4c..95c6cda 100644
--- a/schmeckels/report.py
+++ b/schmeckels/report.py
@@ -1,21 +1,20 @@
 #! /usr/bin/env python3
-from schmeckels.models import Tag, Transaction
-from schmeckels.helper import get_session, format_amount
 import sys
-import click
-from jinja2 import Environment, FileSystemLoader
-from sqlalchemy import func, and_
-from weasyprint import HTML
-from sqlalchemy import func
-from weasyprint import HTML
 from datetime import date
 from pprint import pprint
 
+import click
+from jinja2 import Environment, FileSystemLoader
+from sqlalchemy import and_, func
+from weasyprint import HTML
+
+from schmeckels.helper import format_amount, get_data_dir, get_session
+from schmeckels.models import Tag, Transaction
+
 
 @click.command(name="report")
-@click.option("--profile", "-p")
 @click.option("--year", "-y")
-def command(profile, year):
+def command(year):
     if not year:
         year = date.today().year()
 
@@ -23,7 +22,8 @@ def command(profile, year):
     end_date = date(day=1, month=12, year=int(year))
 
     # Get a list of all tags
-    session = get_session(profile)
+    data_dir = get_data_dir()
+    session = get_session()
     tags = session.query(Tag).filter_by(reporting=True).all()
     data = {"Einnahmen": {}, "Ausgaben": {}}
 
@@ -42,7 +42,6 @@ def command(profile, year):
             else:
                 data["Ausgaben"][name] = format_amount(tag_sum)
 
-    pprint(data)
     context = {
         "year": year,
         "tags": data,
@@ -51,7 +50,7 @@ def command(profile, year):
     }
     context["diff"] = context["sum_in"] + context["sum_out"]
 
-    filename = "output/report_{}_{}.pdf".format(profile, year)
+    filename = f"{data_dir}/reports/{year}.pdf"
     env = Environment(loader=FileSystemLoader("schmeckels/templates/"))
     template = env.get_template("report.tpl")
     html_out = template.render(context)
diff --git a/schmeckels/serve.py b/schmeckels/serve.py
index 4bcd212..8b43e77 100644
--- a/schmeckels/serve.py
+++ b/schmeckels/serve.py
@@ -1,15 +1,16 @@
 #! /usr/bin/env python3
-from flask import Flask, render_template, request, redirect, flash
-from schmeckels.helper import get_session, format_amount
-from datetime import datetime, date
-from dateutil.relativedelta import relativedelta
-from sqlalchemy import func, and_
-import click
-from math import floor
 import calendar
-from schmeckels.models import Transaction, Tag
-from schmeckels.helper import import_transactions
+from datetime import date, datetime
+from math import floor
+
+import click
+from dateutil.relativedelta import relativedelta
+from flask import Flask, flash, redirect, render_template, request
+from sqlalchemy import and_, func
+
 from schmeckels import banks
+from schmeckels.helper import format_amount, get_session, import_transactions
+from schmeckels.models import Tag, Transaction
 
 session = None
 app = Flask(__name__)
@@ -157,9 +158,8 @@ def upload():
 
 
 @click.command(name="serve")
-@click.option("--profile", "-p")
-def command(profile):
+def command():
     global session
-    session = get_session(profile)
+    session = get_session()
     app.secret_key = "WeDon'tHaveSessionsSoThisMustNotBeVerySecure!"
     app.run(host="0.0.0.0", port=8080)
diff --git a/schmeckels/sort.py b/schmeckels/sort.py
index 4fe9f5c..9fe7115 100644
--- a/schmeckels/sort.py
+++ b/schmeckels/sort.py
@@ -1,17 +1,17 @@
 #! /usr/bin/env python3
-from schmeckels.models import Transaction, Tag
-from schmeckels.helper import get_session, create_tag
 import sys
-import click
 
+import click
 from prompt_toolkit.completion import FuzzyWordCompleter
 from prompt_toolkit.shortcuts import prompt
 
+from schmeckels.helper import create_tag, get_session
+from schmeckels.models import Tag, Transaction
+
 
 @click.command(name="sort")
-@click.option("--profile", "-p")
-def command(profile):
-    session = get_session(profile)
+def command():
+    session = get_session()
     tags = session.query(Tag).all()
     tag_names = FuzzyWordCompleter([x.name for x in tags])
     tag_lookup = {tag.name: tag for tag in tags}
@@ -36,7 +36,7 @@ def command(profile):
         tag = tag_lookup.get(select, None)
         if not tag:
             print(f"Creating new category '{select}'")
-            tag = create_tag(select, profile, session)
+            tag = create_tag(select, session)
 
             tags = session.query(Tag).all()
             tag_names = FuzzyWordCompleter([x.name for x in tags])
diff --git a/schmeckels/validate.py b/schmeckels/validate.py
index 1bf5a6d..230d585 100644
--- a/schmeckels/validate.py
+++ b/schmeckels/validate.py
@@ -1,20 +1,22 @@
 #! /usr/bin/env python3
+import os
+import re
+import sys
+
+import click
+import colorful as cf
+import yaml
+from schwifty import IBAN
 from sqlalchemy import create_engine
 from sqlalchemy.orm import sessionmaker
-from sqlalchemy.ext.declarative import declarative_base
-from schmeckels.helper import list_profiles, build_rules_filename, build_database_filename
-from schwifty import IBAN
-import sys
-import click
-import os
-import yaml
-import re
-import colorful as cf
+
+from schmeckels.helper import build_database_filename, build_rules_filename, get_data_dir
 
 try:
-    from yaml import CLoader as Loader, CDumper as Dumper
+    from yaml import CDumper as Dumper
+    from yaml import CLoader as Loader
 except ImportError:
-    from yaml import Loader, Dumper
+    from yaml import Dumper, Loader
 
 ALLOWED_KEYS = ["name", "tags", "iban", "description"]
 TAGS_REGEXP = re.compile(r"[\w]+(?:,\s{0,1}[\w]+)*")
@@ -28,71 +30,70 @@ def verbose_print(text, verbose):
 @click.command(name="validate")
 @click.option("--verbose", "-v", default=False, is_flag=True)
 def command(verbose):
-    for profile in list_profiles():
-        print(f"Checking {profile}:")
-        db_path = build_database_filename(profile)
-        rules_path = build_rules_filename(profile)
+    data_dir = get_data_dir()
+    db_path = build_database_filename(data_dir)
+    rules_path = build_rules_filename(data_dir)
 
-        # Rules
-        if os.path.exists(rules_path) and os.path.isfile(rules_path):
-            with open(rules_path) as fh:
-                data = yaml.load(fh, Loader=Loader)
+    # Rules
+    if os.path.exists(rules_path) and os.path.isfile(rules_path):
+        with open(rules_path) as fh:
+            data = yaml.load(fh, Loader=Loader)
 
-            if not data:
-                print(cf.green("  Ruleset is empty"))
+        if not data:
+            print(cf.green("  Ruleset is empty"))
+        else:
+            errors = 0
+            for rule in data:
+                # validate yaml keys:
+                for key in rule.keys():
+                    if key not in ALLOWED_KEYS:
+                        verbose_print(cf.red(f"Rule uses the invalid key '{key}': {rule}"), verbose)
+                        errors += 1
+
+                if not rule.get("tags"):
+                    verbose_print(cf.red(f"Rule has no tags: {rule}"), verbose)
+                    errors += 1
+
+                if not TAGS_REGEXP.fullmatch(rule.get("tags")):
+                    verbose_print(cf.red(f"Rule has an invalid list of tags: {rule}"), verbose)
+                    errors += 1
+
+                # validate name regex
+                if rule.get("name"):
+                    try:
+                        re.compile(rule["name"])
+                    except:
+                        verbose_print(cf.red(f"  Invalid name regex: '{rule.get('name')}'"), verbose)
+                        errors += 1
+
+                # validate description regex
+                if rule.get("description"):
+                    try:
+                        re.compile(rule["description"])
+                    except:
+                        verbose_print(cf.red(f"  Invalid description regex: '{rule.get('description')}'"), verbose)
+                        errors += 1
+
+                # validate IBAN
+                if rule.get("iban"):
+                    try:
+                        IBAN(rule.get("iban"))
+                    except:
+                        verbose_print(cf.red(f"  Invalid IBAN: '{rule.get('iban')}'"), verbose)
+                        errors += 1
+
+            if errors == 0:
+                print(cf.green(f"  All rules are valid"))
             else:
-                errors = 0
-                for rule in data:
-                    # validate yaml keys:
-                    for key in rule.keys():
-                        if key not in ALLOWED_KEYS:
-                            verbose_print(cf.red(f"Rule uses the invalid key '{key}': {rule}"), verbose)
-                            errors += 1
+                print(cf.red(f"  Found {errors} invalid rules"))
 
-                    if not rule.get("tags"):
-                        verbose_print(cf.red(f"Rule has no tags: {rule}"), verbose)
-                        errors += 1
+    else:
+        print(cf.red(f"  The rule file doesn't exists"))
+        sys.exit(1)
 
-                    if not TAGS_REGEXP.fullmatch(rule.get("tags")):
-                        verbose_print(cf.red(f"Rule has an invalid list of tags: {rule}"), verbose)
-                        errors += 1
-
-                    # validate name regex
-                    if rule.get("name"):
-                        try:
-                            re.compile(rule["name"])
-                        except:
-                            verbose_print(cf.red(f"  Invalid name regex: '{rule.get('name')}'"), verbose)
-                            errors += 1
-
-                    # validate description regex
-                    if rule.get("description"):
-                        try:
-                            re.compile(rule["description"])
-                        except:
-                            verbose_print(cf.red(f"  Invalid description regex: '{rule.get('description')}'"), verbose)
-                            errors += 1
-
-                    # validate IBAN
-                    if rule.get("iban"):
-                        try:
-                            IBAN(rule.get("iban"))
-                        except:
-                            verbose_print(cf.red(f"  Invalid IBAN: '{rule.get('iban')}'"), verbose)
-                            errors += 1
-
-                if errors == 0:
-                    print(cf.green(f"  All rules are valid"))
-                else:
-                    print(cf.red(f"  Found {errors} invalid rules"))
-
-        else:
-            print(cf.red(f"  The rule file doesn't exists"))
-            sys.exit(1)
-
-        # Database
-        if os.path.exists(db_path) and os.path.isfile(db_path):
-            print(cf.green(f"  Database exists"))
-        else:
-            print(cf.red(f"  The database file doesn't exists"))
-            sys.exit(1)
+    # Database
+    if os.path.exists(db_path) and os.path.isfile(db_path):
+        print(cf.green(f"  Database exists"))
+    else:
+        print(cf.red(f"  The database file doesn't exists"))
+        sys.exit(1)
diff --git a/shell.nix b/shell.nix
index 658bf50..b049fbd 100644
--- a/shell.nix
+++ b/shell.nix
@@ -1,11 +1,16 @@
 { pkgs ? import <nixpkgs> {} }:
 
 pkgs.mkShell {
-  buildInputs = [
-     pkgs.python3
-     pkgs.python3Packages.pip
-     pkgs.python3Packages.setuptools
-    pkgs.poetry
+  buildInputs = with pkgs; [
+    black
+    python3
+    python3Packages.flake8
+    python3Packages.isort
+    python3Packages.pip
+    python3Packages.poetry
+    python3Packages.setuptools
+    # python3Packages.pygobject3
+    # python3Packages.cairocffi
   ];
 
 }