Integration with {crew}

targets 1.0.0

targets is moving to version 1.0.0 because it is significantly more mature than previous versions. Specifically,

1. tar_make() now integrates with crew, which will significantly improve the way targets does high-performance computing going forward.
2. All other functionality in targets has stabilized. There is still room for smaller new features, but none as large as crew integration, none that will fundamentally change how the package operates.

Major improvements

• Support distributed computing through the crew package in tar_make() (#753). crew itself is still in its early stages and currently lacks the launcher plugins to match the clustermq and future backends, but long-term, crew will be the predominant high-performance computing backend.

Minor improvements

• Add a new store_copy_object() to the store class to enable "fst_dt" and other formats to make deep copies when needed (#1041, @MilesMcBain).
• Add a new copy argument to allow tar_format() formats to set the store_copy_object() method (#1041, @MilesMcBain).
• Shorten the output string returned by tar_format() when default methods are used.
• Add a change_directory argument to tar_source() (#1040, @dipterix).
• In format = "url" targets, implement retries and timeouts when connecting to URLs. The default timeout is 10 seconds, and the default retry interval is 1 second. Both are configurable via tar_resources_url() (#1048).
• Use parallelly::freePort() in tar_random_port().
• Rename a target and a function in the tar_script() example pipeline (#1033, @b-rodrigues).
• Edit the description.

CRAN patch

targets 0.14.3

• Handle encoding errors while trying to process error and warning messages (#1019, @adrian-quintario).
• Fix S3 generic/method consistency.

Error handling tweaks

targets 0.14.2

• Forward user-level custom error conditions to the top of the pipeline (#997, @alexverse).
• Link to the help page of the manual.

Bug fixes

targets 0.14.1

• Fix the command inserted for debug mode (#975).
• Set empty chunk options to ensure Target Markdown compatibility with the special "setup" chunk (#973, @KaiAragaki).
• Only store the first 50 warnings in the metadata, and cap the text of the warning messages at 2048 characters (#983, @thejokenott).
• Enhance the tar_destroy() help file (#988, @Sage0614).
• Implement destroy = "user" in tar_destroy().

Extend RNG seed functionality

targets 0.14.0

• Move #!/bin/sh line to the top of SLURM clustermq template file (#944, #955, @GiuseppeTT).
• Add new function tar_path_script().
• Rename tar_store() to tar_path_store() with deprecation.
• Rename tar_path() to tar_path_target() with deprecation.
• Add new function tar_path_script_support().
• Make Target Markdown target scripts dynamically locate their support scripts so the appropriate scripts can be found even when they are generated from one directory and sourced from another (#953, #957, @TylerGrantSmith).
• Allow user-side control of the seeds at the pipeline level. tar_option_set() now supports a seed argument, and target-specific seeds are determined by tar_option_get("seed") and the target name. tar_option_set(seed = NA) disables seed-setting behavior but forcibly invalidates all the affected targets except when seed is FALSE in the target's tar_cue() (#882, @sworland-thyme, @joelnitta).
• Implement a seed argument in tar_cue() to control whether targets update in response to changing or NA seeds (#882, @sworland-thyme, @joelnitta).
• Reduce the number of per-target AWS/GCP storage API calls. Previously there were 3 API calls per target, including 2 HEAD requests. Now there is just 1 for a typical target (unless dependencies have to be downloaded). Relies on S3 strong read-after-write consistency (#958).
• Update the tar_github_actions() workflow file to use @v2 (#960, @kulinar).
• Print helpful hints while debugging a target interactively (#961).
• Only attempt to debug a target when callr_function is NULL (#961).
• Make formats "feather", "parquet", "file", and "url" work with error = "null" (#969).
• Declare formats "keras" and "torch" superseded by tar_format(). Documented in the tar_target() help file.
• Declare formats "keras" and "torch" incompatible with error = "null". Documented in the tar_target() help file and in a warning thrown by tar_target() via tar_target_raw().
• Add a convert argument to tar_format() to allow custom store_convert_object() methods (#970).

tidyselect compat

targets 0.13.5

• Use any_of() instead of all_of() in tests to ensure compatibility with tidyselect 1.1.2.9000 (#928, @hadley).
• Make the run.R from use_targets() executable (#929, @petrbouchal).
• Add #!/usr/bin/env Rscript to the top of run.R from use_targets() (#929, @petrbouchal).

Reduce CRAN check time

targets 0.13.4

• Implement custom alternative to skip_on_cran() to avoid r-lib/testthat#1470 (comment).
• Skip more tests on CRAN.

Package data and error messages

targets 0.13.3

Enhancements

• Print "no targets found" when there are no targets in the pipeline to check or build, or if the name\ s argument of tar_make() does not identify any such targets in the pipeline (#923, @llrs).
• Ignore .packageName, .__NAMESPACE__., and .__S3MethodsTable__. when importing objects from pack
  ages with the imports option of tar_option_set().
• Import datasets from packages in the imports option of tar_option_set() (#926, @joelnitta).
• Print target-specific elapsed runtimes in the verbose and timestamp reporters.
• Improve error messages in functions like tar_read() and tar_load() when the data store is missing.

Nicer error handling

targets 0.13.2

Bug fixes

• Do not incorrectly reference feather resources for parquet storage.

Enhancements

• Simplify and improve error handling.
• In the command column of tar_manifest() output, separate lines with "\n" instead of "\n" so the text output is straightforward to work with.
• Add a drop_missing argument to tar_manifest() to hide/show columns with all NA values.
• Do not set Parquet version.

Fix reverse dependency checks

targets 0.13.1

• Fix reverse dependency checks.