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varnish 1.0.2 (2023-04-10)


varnish 1.0.1 (2023-12-14)


  • Font sizes for headings of overview box, callouts, and accordions now use relative units instead of pixels. This will cause a slight change in the appearance of these headings, but they will be more consistent as the size of the window changes.

varnish 1.0.0 (2023-12-13)


We are bumping the major version number with this release because this version of {varnish} now requires a new set of translate variables to be passed (which are provided by sandpaper >= 0.16.0). If these variables do not exist, the template will contain no navigation text.

This breaking change is a concious decision. The alternative for this was to conditinally include translations and fall back to their hard-coded English text when they did not exist. This may seem like a more reasonable choice, but it can lead to upstream bugs that are difficult to detect (if translations are not working, it’s not clear what is the cause if the text is in English: is it coming from {varnish} or is it coming from {sandpaper}?) and it makes maintenance of these navigational elements more difficult because we would have to update them in two places.


  • Translation of lesson elements is now incorporated. Translation strings within the HTML templates can be found be searching for the word translate. All variables are assumed to exist and are defined in The Workbench as PascalCase variables. In order for this version of {varnish} to work, it requires {sandpaper} version 0.16.0 or greater. This is a breaking change (reported: @zkamvar, #104; implemented: @zkamvar and @joelnitta, #105)
  • Buttons to show/hide the sidebar and solutions now have extra data attributes that are used for the language used by the button when they are toggled. This is an improvement over hard-coding the phrases inside of the JavaScript.



Added @joelnitta as a contributor. Added @robadob as a contributor.

varnish 0.4.0 (2023-11-29)

  • life cycle icons are now displayed as badges for better visibility
  • lessons that are stable with peer-reviewed doi releases will now have a doi badge displayed with a link to the publication.

varnish 0.3.3

  • Code blocks in narrative no longer have a white background on top of the grey background of the code block (fixed: @zkamvar, #103).
  • The colour of the inline code has been changed from the bootstrap default to black (fixed: @zkamvar, #103).

varnish 0.3.2

varnish 0.3.1

  • Lesson titles no longer escape ampersands (reported and fixed: @Robadob, #95)

varnish 0.3.0

  • Lesson overview pages are now supported (reported: @zkamvar,; implemented: @zkamvar, #87). These overview pages do not have a sidebar and have extra navigation back to home and the setup page in the menu bar.
  • new ‘overview’ template is implemented to always contain links back to the home page.
  • The spoiler dropdown item has been implemented to allow authors to create stand-alone accordions that will hide optinal content from users without using a solution class (implemented: @tobyhodges, #92)


  • The build process for css/js bundles is now self-contained in the node dev dependencies. Running npm install will install everything needed to re-compile the js and css.
  • The README has been updated with instructions to build locally
  • An .editorconfig file has been added to ensure the JS content is indented properly

varnish 0.2.18

varnish 0.2.17

  • The margin below the schedule table in instructor view is now 25px instead of 225px (reported: @bencomp, #81; fixed: @bencomp, #82).

varnish 0.2.16

  • font weight for anything in definition terms is now inherited.

varnish 0.2.15

  • The Carpentries Lab logo has been updated (reported: @tobyhodges, #59; fixed: @tobyhodges, #76)
  • The size for large logos are now capped at 64px so contributors do not need to force their logos to a particular size when exporting SVG (fixed: @zkamvar, #76)

varnish 0.2.14

  • Workbench Beta Phase Edit on GitHub links no longer redirect people to the beta phase intermediate page during the second stage of the beta phase.

varnish 0.2.13

  • Table display CSS is set to table as opposed to block, thus ensuring it is represented correctly in the accessibility tree (see (fixed: @zkamvar, #74)
  • Table headings are now bold to easily distinguish from table contents.
  • Collapsing the sidebar no longer results in extra room at the bottom of the page.

varnish 0.2.12

  • Table formatting has been fixed to no longer include 100px padding in the first row (reported: @marklcrowe, #72; fixed: @zkamvar, 4385602)
  • All tables will now be striped for accessibility

varnish 0.2.11

  • Formatted print media to avoid breaking in important contexts (code blocks, callout blocks, instructor notes) and shows solutions and instructor notes. (reported: Anonymous, #70; fixed: @zkamvar, #71)

varnish 0.2.10

varnish 0.2.9

  • temporarily turn off matomo analytics

varnish 0.2.8

  • Workbench Beta phase “Edit on GitHub” links are now formatted correctly. (reported: @zkamvar, #65; fixed @zkamvar, #66)

varnish 0.2.7

  • Lessons in different phases of the workbench beta phase will now have the URLs redirect to a site that explains the purpose of the phase.

varnish 0.2.6

varnish 0.2.5

  • Workbench Beta messaging has been modified to be more visible and to link back to the original lesson if possible.
  • The icon for lessons in “alpha” has been updated so it has a yellow background with a grey glyph so that the icon shows up better.

varnish 0.2.4

  • Callout block titles have been improved: The underline height for titles have been fixed to not look wonky when titles have multiple lines (reported: @anenadic, #53; fixed @zkamvar, #55). Moreover, the text transformation will no longer affect code and kbd elements.
  • Heading element sizes have been recoded to use relative units. There was not enough specification in the original CSS to properly distinguish between H3 and H4 elements; moreover, on tablet and mobile devices, the H1 heading looked smallter than the H2 heading due to a copy/paste error. This has been fixed by using relative calcualtions (@zkamvar, #55)
  • Sidebar navigation now says “Episodes” instead of “Expand” when collapsed so that it is less confusing for folks. (suggested by @drmowinckels, (#47); fixed by @zkamvar, #56)
  • The collapsed sidebar label no longer reverts to saying “collapse” on a new page.
  • The hamburger menu for mobile devices now has a border so it’s more clear that it is a menu (suggested by @drmowinckels, (#47); fixed by @zkamvar, #57)

varnish 0.2.3

varnish 0.2.2

  • Formatting of list elements in the solutions and instructor notes now follows the same formatting as the rest of the content (reported: #51 by @tobyhodges, fixed: #52 by @zkamvar)

varnish 0.2.1

varnish 0.2.0

  • The sidebar state (expanded or collapsed) will now persist during navigation to another page in the same window/tab. Opening the site in a new window/tab will reset the sidebar state to expanded. (reported: #43 by @anenadic, fixed #46, @zkamvar). This fix uses the sessionStorage API.

varnish 0.1.16

  • CHAPTERS has been temporarily renamed to EPISODES to reduce cognative load between the webpage and the source folders

varnish 0.1.15

  • The search field has been disabled to avoid confusion. We have not yet enabled search as this requires further testing. Disabling the search field means that it is now more clear that search is not yet available. (#44 by @zkamvar)

varnish 0.1.14

  • indicators for lesson development stage (pre-alpha, alpha, beta) have been added as <abbr> elements with a link to the appropriate section in the CDH and title elements that describe the purpose of the stage. Visually hidden text follows the <abbr> element for users who can not perceive the lesson visually (#39 by @zkamvar, reviewed by @tobyhodges).
  • FIX: .lesson-title and .lesson-title-md are now inline-block elements

varnish 0.1.13

  • An alert for the workbench beta phase is implemented if the lesson has workbench-beta: true in the config.yaml.

varnish 0.1.12

  • dropdown navigation no longer is hidden by the sidebar on XXL screens; z-index of nav.bottom-nav set to 3. (reported: #35 by @brownsarahm, fixed: #36 by @zkamvar)

varnish 0.1.11

  • blockquotes are now more clearly delineated from the rest of the content (reported: #27 by @fiveop, fixed: #31 by @zkamvar)

varnish 0.1.10

  • lab and incubator logos are now available.

varnish 0.1.9

  • Fix missing pegboard version tag

varnish 0.1.8

  • custom workbench engines are now properly linked in the footer via the sandpaper_cfg pegboard_cfg, and varnish_cfg variables.
  • code of conduct link now points to the file so authors can update or modify their own code of conduct (NOTE: all Carpentries lessons MUST have a code of conduct that links to the Carpentries Code of Conduct as well as the reporting guidelines.

varnish 0.1.7

  • compile the changes from 0.1.6

varnish 0.1.6

  • Tables now scroll on overflow

varnish 0.1.5

varnish 0.1.4

varnish 0.1.3

  • Add small version of the carpentries logo

varnish 0.1.2

varnish 0.1.1

  • Add LICENSE file clarifying MIT licensing

varnish 0.1.0

  • Breaking change; moving from the carpentries/styles theme to the new theme developed in 2021. Variables and layouts have changed significantly, so this package gains a significant update.


  • instructor block placeholder added


  • update css to use em and not px
  • align logo with navbar
  • add testing phase notification to navbar


  • First tracked version of varnish
  • updated links to engines in the footer