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Explain better how to set multiple repos for setup-r #1010

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Explain better how to set multiple repos for setup-r #1010

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00792c7
Update action.yml
msberends Jun 6, 2025
b4736c6
Update action.yml
msberends Jun 6, 2025
4baf6d7
Update installer.ts
msberends Jun 6, 2025
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4 changes: 3 additions & 1 deletion setup-r/action.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -65,7 +65,9 @@ inputs:
Windows.'
default: false
extra-repositories:
description: 'One or more extra CRAN-like repositories to include in the `repos` global option'
description: 'One or more extra CRAN-like repositories to include in the `repos` global
option. This can be a single character (e.g., "https://repo1.org, https://repo2.org") or
mutiple characters on separate lines.'
default: ''
working-directory:
description: >
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15 changes: 9 additions & 6 deletions setup-r/src/installer.ts
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Expand Up @@ -703,16 +703,19 @@ async function setupRLibrary(version: IRVersion) {
: `"${core.getInput("http-user-agent")}"`;
}

// Split the repositories by whitespace and then quote each entry joining with commas
let extra_repositories = core.getInput("extra-repositories");

// Prepend a , if there are extra repositories
if (extra_repositories) {
// Read multiline input which supports both YAML list and comma-separated string
let extra_repositories = core.getMultilineInput("extra-repositories", { trimWhitespace: true });

if (extra_repositories.length > 0) {
extra_repositories = extra_repositories
.split(/\s+/)
.map((x) => `"${x}"`)
.flatMap((x) => x.split(/\s*,\s*/)) // split comma-separated lines if any
.filter((x) => x.length > 0) // remove empty strings
.map((x) => `"${x}"`) // quote each
.join(",");
extra_repositories = ",\n " + extra_repositories;
} else {
extra_repositories = "";
}

await fs.promises.writeFile(
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