133 lines
4.3 KiB
Markdown
133 lines
4.3 KiB
Markdown
# STRAW2analysis
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All analysis for the STRAW project.
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To install:
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1. Create a conda virtual environment from the `environment.yml` file.
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```shell
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cd config
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conda env create --file environment.yml
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conda activate straw2analysis
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```
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If you have already created this environment, you can update it using:
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```shell
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conda deactivate
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conda env update --file environment.yml
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conda activate straw2analysis
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```
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To use this environment in the Jupyter notebooks under `./exploration/`,
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you can select it under Kernel > Change kernel after running:
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```shell
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ipython kernel install --user --name=straw2analysis
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```
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2. Provide a file called `.env` to be used by `python-dotenv` which should be placed in the top folder of the application
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and should have the form:
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```
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DB_PASSWORD=database-password
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```
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# RAPIDS
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To install RAPIDS, follow the [instructions on their webpage](https://www.rapids.science/1.6/setup/installation/).
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Here, I include additional information related to the installation and specific to the STRAW2analysis project.
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The installation was tested on Windows using Ubuntu 20.04 on Windows Subsystem for Linux ([WSL2](https://docs.microsoft.com/en-us/windows/wsl/install)).
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## Custom configuration
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### Credentials
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As mentioned under [Database in RAPIDS documentation](https://www.rapids.science/1.6/snippets/database/), a `credentials.yaml` file is needed to connect to a database.
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It should contain:
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```yaml
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PSQL_STRAW:
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database: staw
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host: 212.235.208.113
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password: password
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port: 5432
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user: staw_db
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```
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where`password` needs to be specified as well.
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## Possible installation issues
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### Missing dependencies for RPostgres
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To install `RPostgres` R package (used to connect to the PostgreSQL database), an error might occur:
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```text
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------------------------- ANTICONF ERROR ---------------------------
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Configuration failed because libpq was not found. Try installing:
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* deb: libpq-dev (Debian, Ubuntu, etc)
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* rpm: postgresql-devel (Fedora, EPEL)
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* rpm: postgreql8-devel, psstgresql92-devel, postgresql93-devel, or postgresql94-devel (Amazon Linux)
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* csw: postgresql_dev (Solaris)
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* brew: libpq (OSX)
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If libpq is already installed, check that either:
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(i) 'pkg-config' is in your PATH AND PKG_CONFIG_PATH contains a libpq.pc file; or
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(ii) 'pg_config' is in your PATH.
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If neither can detect , you can set INCLUDE_DIR
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and LIB_DIR manually via:
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R CMD INSTALL --configure-vars='INCLUDE_DIR=... LIB_DIR=...'
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--------------------------[ ERROR MESSAGE ]----------------------------
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<stdin>:1:10: fatal error: libpq-fe.h: No such file or directory
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compilation terminated.
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```
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The library requires `libpq` for compiling from source, so install accordingly.
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### Timezone environment variable for tidyverse (relevant for WSL2)
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One of the R packages, `tidyverse` might need access to the `TZ` environment variable during the installation.
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On Ubuntu 20.04 on WSL2 this triggers the following error:
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```text
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> install.packages('tidyverse')
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ERROR: configuration failed for package ‘xml2’
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System has not been booted with systemd as init system (PID 1). Can't operate.
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Failed to create bus connection: Host is down
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Warning in system("timedatectl", intern = TRUE) :
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running command 'timedatectl' had status 1
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Error in loadNamespace(j <- i[[1L]], c(lib.loc, .libPaths()), versionCheck = vI[[j]]) :
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namespace ‘xml2’ 1.3.1 is already loaded, but >= 1.3.2 is required
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Calls: <Anonymous> ... namespaceImportFrom -> asNamespace -> loadNamespace
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Execution halted
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ERROR: lazy loading failed for package ‘tidyverse’
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```
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This happens because WSL2 does not use the `timedatectl` service, which provides this variable.
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```bash
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~$ timedatectl
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System has not been booted with systemd as init system (PID 1). Can't operate.
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Failed to create bus connection: Host is down
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```
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This can be amended by setting the environment variable manually before attempting to install `tidyverse`:
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```bash
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TZ='Europe/Ljubljana'
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```
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## Possible runtime issues
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### Unix end of line characters
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Upon running rapids, an error might occur:
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```bash
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/usr/bin/env: ‘python3\r’: No such file or directory
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```
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This is due to Windows style end of line characters.
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To amend this, I added a `.gitattributes` files to force `git` to checkout `rapids` using Unix EOL characters.
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If this still fails, `dos2unix` can be used to change them.
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