Dead keys on Linux: bringing back the Windows behaviour
On Linux, two grave accents cost four keystrokes, two on Windows. Understanding the Compose tables and restoring the Windows behaviour with ~/.XCompose.
>_ Hi, I'm Xavier
Data Engineer & developer
I build robust data platforms and write about what I learn along the way.
Latest posts
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Moving from GitLab to Forgejo
In a month, I reduce the resource footprint of two of my services: Forgejo absorbed both the forge (GitLab) and the container image registry. A consolidation story — the why, the incremental migration, and the pitfalls I hit along the way.
The blog is back!
The blog is back after a long pause, fully rebuilt on a new stack. Now written with a well-scoped LLM, it should hold an honest cadence.
Projects
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s3-vedrfolnir
A web data browser for S3. It reads the key space as the tree that data workloads deposit there in practice — and lets you query the objects underneath with SQL, not just download them.
- S3
- Object Storage
- SQL
- DuckDB
Skills
See resume →Languages & scripting
- Java
- Golang
- Python
- Bash
- PowerShell
- SQL (advanced)
ETL / ELT
- Apache Hop
- Informatica PowerCenter
- Talend Data Integration
- Oracle Data Integrator (ODI)
- Microsoft SSIS
- SAP BODS
Databases
- PostgreSQL
- Microsoft SQL Server
- Oracle Database
- MongoDB (document noSQL)
- Graph databases
- DWH modeling (SRC/STG/CDS-ODS/DMT layers)
Data virtualization & query
- Trino
- Denodo
BI / Reporting
- MicroStrategy
- Microsoft SSRS
- SAP BusinessObjects
- Qlik Sense
- SSAS (cubes/tabular)
Modern data engineering
- Apache Airflow
- Dagster
- Airbyte
- dbt
- Parquet
- Apache Iceberg
- DuckDB
- MinIO/S3
- OpenMetadata
- Dremio
DevOps / Infra / Methods
- Docker
- Kubernetes
- Git
- CI/CD (Jenkins, GitLab CI, XL Deploy/Release)
- Liquibase
- Monitoring (Zabbix, Prometheus, Grafana)
- SSL/PKI
- Linux (Debian)
Data science / AI
- Dataiku (certified Core Designer)
- Local LLMs / on-prem RAG
- Sovereign AI agents
- MCP