Db engine b plus tree

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -44,7 +44,7 @@ body:
         seriousdb version or commit:
         Python version:
         Operating system:
-        Installation method (uv, Nix, or other):
+        Installation method (uv or other):
   - type: textarea
     id: context
     attributes:

.github/workflows/docs.yml

@@ -14,12 +14,12 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 5
     steps:
-      - uses: actions/checkout@v7.0.1
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
         with:
           persist-credentials: false
 
       - name: Install uv
-        uses: astral-sh/setup-uv@v10.1.0
+        uses: astral-sh/setup-uv@bec219d24cd3e171d82865faccec33120bb574f4 # v10.1.0
         with:
           python-version: "3.11"
           enable-cache: true

.github/workflows/lint.yml

@@ -14,12 +14,12 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 5
     steps:
-      - uses: actions/checkout@v7.0.1
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
         with:
           persist-credentials: false
 
       - name: Install uv
-        uses: astral-sh/setup-uv@v10.1.0
+        uses: astral-sh/setup-uv@bec219d24cd3e171d82865faccec33120bb574f4 # v10.1.0
         with:
           python-version: "3.11"
           enable-cache: true

.github/workflows/lint_pr.yml

@@ -18,15 +18,15 @@ jobs:
     steps:
       # Lint the pull request message and throw an error if it is not alligned
       # with the conventional commit default rules (e.g. <type>: description)
-      - uses: amannn/action-semantic-pull-request@v6
+      - uses: amannn/action-semantic-pull-request@48f256284bd46cdaab1048c3721360e808335d50 # v6.1.1
         id: lint_pr_title
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
       # When the previous steps fails, the workflow would stop. By adding this
       # condition you can continue the execution with the populated error message.
       - if: always() && (steps.lint_pr_title.outputs.error_message != null)
-        uses: marocchino/sticky-pull-request-comment@v2
+        uses: marocchino/sticky-pull-request-comment@773744901bac0e8cbb5a0dc842800d45e9b2b405 # v2.9.4
         with:
           header: pr-title-lint-error
           message: |
@@ -39,7 +39,7 @@ jobs:
 
       # Delete a previous comment when the issue has been resolved
       - if: ${{ steps.lint_pr_title.outputs.error_message == null }}
-        uses: marocchino/sticky-pull-request-comment@v2
+        uses: marocchino/sticky-pull-request-comment@773744901bac0e8cbb5a0dc842800d45e9b2b405 # v2.9.4
         with:
           header: pr-title-lint-error
           delete: true

.github/workflows/tests.yml

@@ -11,11 +11,12 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
 
       - name: Install uv
-        uses: astral-sh/setup-uv@v3
+        uses: astral-sh/setup-uv@bec219d24cd3e171d82865faccec33120bb574f4 # v10.1.0
         with:
+          python-version: "3.11"
           enable-cache: true
 
       - name: Install project

.github/workflows/typecheck.yml

@@ -14,12 +14,12 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 5
     steps:
-      - uses: actions/checkout@v7.0.1
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
         with:
           persist-credentials: false
 
       - name: Install uv
-        uses: astral-sh/setup-uv@v10.1.0
+        uses: astral-sh/setup-uv@bec219d24cd3e171d82865faccec33120bb574f4 # v10.1.0
         with:
           python-version: "3.11"
           enable-cache: true

README.md

@@ -63,7 +63,7 @@ cp .env.example .env
 The `.env` file is gitignored and should never be committed.
 
 | Variable              | Default | Description                                        |
-|-----------------------|---------|----------------------------------------------------|
+| --------------------- | ------- | -------------------------------------------------- |
 | `SERIOUSDB_DB_FILE`   | `.sdb`  | Path to the on-disk database file.                 |
 | `SERIOUSDB_LOG_LEVEL` | `INFO`  | Logging level (DEBUG/INFO/WARNING/ERROR/CRITICAL). |
 
@@ -80,7 +80,6 @@ Set configuration before importing `seriousdb`.
 - [Contributing](docs/contributing.md)
 - [Testing](docs/testing.md)
 - [Project configuration](docs/configuration.md)
-- [Changelog](CHANGELOG.md)
 
 ## License
 

docs/development.md

@@ -33,102 +33,40 @@ seriousdb.set("name", "Alice")
 seriousdb.get("name")
 ```
 
-## Nix
-
-> The project provides a Nix development environment with the tools required for local development.
-
-### Enter Nix develop
-
-From the project root, run:
-
-```bash
-nix develop
-```
-
-This starts a shell with the project's development dependencies available.
-
-### Nix (in the Nix Shell)
-
-```bash
-python
-```
-
-Then import and use `seriousdb` as shown above.
-
 ## Formatting
 
 ### Format Python files with `ruff`:
 
-#### uv
-
 ```bash
 uv run ruff format .
 ```
 
-### Nix (in Nix Shell)
-
-```bash
-ruff format .
-```
-
 ### To check formatting without changing files:
 
-#### uv
-
 ```bash
 uv run ruff format --check .
 ```
 
-### Nix (in Nix Shell)
-
-```bash
-ruff format --check .
-```
-
 ## Linting
 
 ### Lint python files with `ruff`:
 
-#### uv
-
 ```bash
 uv run ruff check .
 ```
 
-#### Nix (in Nix Shell)
-
-```bash
-ruff check .
-```
-
 ### Type checking with `ty`
 
-#### uv
-
 ```bash
 uv run ty check .
 ```
 
-#### Nix (in Nix Shell)
-
-```bash
-ty check .
-```
-
 ### To fix linter errors and warning if possible run following command:
 
-#### uv
-
 ```bash
 uv run ruff check --fix .
 ```
 
-### Nix (in Nix Shell)
-
-```bash
-ruff check --fix .
-```
-
 ## Docstrings
 
 Python docstrings follow the [NumPy style](https://numpydoc.readthedocs.io/en/latest/format.html).
@@ -178,19 +116,11 @@ files under it by hand: edit the docstring instead and regenerate.
 
 ### Regenerate
 
-#### uv
-
 ```bash
 uv sync --group docs
 uv run --group docs python scripts/docs-reference.py
 ```
 
-#### Nix (in Nix Shell)
-
-```bash
-python scripts/docs-reference.py
-```
-
 Commit any resulting changes under `docs/reference/` along with your docstring change. CI (see
 [`.github/workflows/docs.yml`](../.github/workflows/docs.yml)) rebuilds it and fails the check if
 the committed output doesn't match, so a stale reference is caught before merge.