let's try this
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6 changed files with 221 additions and 1 deletions
13
.forgejo/install-emacs/action.yml
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13
.forgejo/install-emacs/action.yml
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name: 'Set up Emacs'
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description: 'Install a specific Emacs version for use in your workflow.'
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author: 'Steve Purcell'
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inputs:
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version:
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description: 'The version of Emacs to install, e.g. "24.3", or "snapshot" for a recent development version.'
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runs:
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using: 'composite'
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steps:
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- run: ${{ github.action_path }}/install.sh
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shell: bash
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env:
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INPUT_VERSION: ${{ inputs.version }}
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42
.forgejo/install-emacs/flake.lock
generated
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42
.forgejo/install-emacs/flake.lock
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{
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"nodes": {
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"flake-utils": {
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"locked": {
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"lastModified": 1667395993,
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"narHash": "sha256-nuEHfE/LcWyuSWnS8t12N1wc105Qtau+/OdUAjtQ0rA=",
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"owner": "numtide",
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"repo": "flake-utils",
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"rev": "5aed5285a952e0b949eb3ba02c12fa4fcfef535f",
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"type": "github"
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},
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"original": {
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"owner": "numtide",
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"repo": "flake-utils",
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"type": "github"
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}
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},
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"nixpkgs": {
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"locked": {
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"lastModified": 1669165918,
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"narHash": "sha256-hIVruk2+0wmw/Kfzy11rG3q7ev3VTi/IKVODeHcVjFo=",
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"owner": "NixOS",
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"repo": "nixpkgs",
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"rev": "3b400a525d92e4085e46141ff48cbf89fd89739e",
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"type": "github"
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},
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"original": {
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"id": "nixpkgs",
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"ref": "nixpkgs-unstable",
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"type": "indirect"
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}
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},
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"root": {
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"inputs": {
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"flake-utils": "flake-utils",
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"nixpkgs": "nixpkgs"
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}
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}
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},
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"root": "root",
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"version": 7
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}
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21
.forgejo/install-emacs/flake.nix
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21
.forgejo/install-emacs/flake.nix
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{
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description = "Setup Emacs Action";
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inputs =
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{
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nixpkgs.url = "nixpkgs/nixpkgs-unstable";
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flake-utils.url = "github:numtide/flake-utils";
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};
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outputs = { self, nixpkgs, flake-utils }:
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flake-utils.lib.eachDefaultSystem (system:
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let
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pkgs = import nixpkgs { inherit system; };
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in
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{
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devShell = pkgs.mkShell {
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buildInputs = with pkgs; [ pkgs.shellcheck ];
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};
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}
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);
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}
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123
.forgejo/install-emacs/install-nix.sh
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123
.forgejo/install-emacs/install-nix.sh
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#!/usr/bin/env bash
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set -euo pipefail
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if nix_path="$(type -p nix)" ; then
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echo "Aborting: Nix is already installed at ${nix_path}"
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exit
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fi
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if [[ ($OSTYPE =~ linux) && ($INPUT_ENABLE_KVM == 'true') ]]; then
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enable_kvm() {
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echo 'KERNEL=="kvm", GROUP="kvm", MODE="0666", OPTIONS+="static_node=kvm"' | sudo tee /etc/udev/rules.d/99-install-nix-action-kvm.rules
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sudo udevadm control --reload-rules && sudo udevadm trigger --name-match=kvm
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}
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echo '::group::Enabling KVM support'
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enable_kvm && echo 'Enabled KVM' || echo 'KVM is not available'
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echo '::endgroup::'
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fi
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# GitHub command to put the following log messages into a group which is collapsed by default
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echo "::group::Installing Nix"
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# Create a temporary workdir
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workdir=$(mktemp -d)
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trap 'rm -rf "$workdir"' EXIT
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# Configure Nix
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add_config() {
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echo "$1" >> "$workdir/nix.conf"
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}
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add_config "show-trace = true"
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# Set jobs to number of cores
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add_config "max-jobs = auto"
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if [[ $OSTYPE =~ darwin ]]; then
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add_config "ssl-cert-file = /etc/ssl/cert.pem"
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fi
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# Allow binary caches for user
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add_config "trusted-users = root ${USER:-}"
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# Add a GitHub access token.
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# Token-less access is subject to lower rate limits.
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if [[ -n "${INPUT_GITHUB_ACCESS_TOKEN:-}" ]]; then
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echo "::debug::Using the provided github_access_token for github.com"
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add_config "access-tokens = github.com=$INPUT_GITHUB_ACCESS_TOKEN"
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# Use the default GitHub token if available.
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# Skip this step if running an Enterprise instance. The default token there does not work for github.com.
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elif [[ -n "${GITHUB_TOKEN:-}" && $GITHUB_SERVER_URL == "https://github.com" ]]; then
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echo "::debug::Using the default GITHUB_TOKEN for github.com"
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add_config "access-tokens = github.com=$GITHUB_TOKEN"
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else
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echo "::debug::Continuing without a GitHub access token"
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fi
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# Append extra nix configuration if provided
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if [[ -n "${INPUT_EXTRA_NIX_CONFIG:-}" ]]; then
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add_config "$INPUT_EXTRA_NIX_CONFIG"
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fi
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if [[ ! $INPUT_EXTRA_NIX_CONFIG =~ "experimental-features" ]]; then
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add_config "experimental-features = nix-command flakes"
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fi
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# Always allow substituting from the cache, even if the derivation has `allowSubstitutes = false`.
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# This is a CI optimisation to avoid having to download the inputs for already-cached derivations to rebuild trivial text files.
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if [[ ! $INPUT_EXTRA_NIX_CONFIG =~ "always-allow-substitutes" ]]; then
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add_config "always-allow-substitutes = true"
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fi
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# Nix installer flags
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installer_options=(
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--no-channel-add
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--darwin-use-unencrypted-nix-store-volume
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--nix-extra-conf-file "$workdir/nix.conf"
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)
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# only use the nix-daemon settings if on darwin (which get ignored) or systemd is supported
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if [[ (! $INPUT_INSTALL_OPTIONS =~ "--no-daemon") && ($OSTYPE =~ darwin || -e /run/systemd/system) ]]; then
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installer_options+=(
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--daemon
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--daemon-user-count "$(python3 -c 'import multiprocessing as mp; print(mp.cpu_count() * 2)')"
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)
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else
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# "fix" the following error when running nix*
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# error: the group 'nixbld' specified in 'build-users-group' does not exist
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add_config "build-users-group ="
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sudo mkdir -p /etc/nix
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sudo chmod 0755 /etc/nix
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sudo cp "$workdir/nix.conf" /etc/nix/nix.conf
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fi
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if [[ -n "${INPUT_INSTALL_OPTIONS:-}" ]]; then
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IFS=' ' read -r -a extra_installer_options <<< "$INPUT_INSTALL_OPTIONS"
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installer_options=("${extra_installer_options[@]}" "${installer_options[@]}")
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fi
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echo "installer options: ${installer_options[*]}"
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# There is --retry-on-errors, but only newer curl versions support that
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curl_retries=5
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while ! curl -sS -o "$workdir/install" -v --fail -L "${INPUT_INSTALL_URL:-https://releases.nixos.org/nix/nix-2.22.1/install}"
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do
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sleep 1
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((curl_retries--))
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if [[ $curl_retries -le 0 ]]; then
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echo "curl retries failed" >&2
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exit 1
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fi
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done
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sh "$workdir/install" "${installer_options[@]}"
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# Set paths
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echo "/nix/var/nix/profiles/default/bin" >> "$GITHUB_PATH"
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# new path for nix 2.14
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echo "$HOME/.nix-profile/bin" >> "$GITHUB_PATH"
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if [[ -n "${INPUT_NIX_PATH:-}" ]]; then
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echo "NIX_PATH=${INPUT_NIX_PATH}" >> "$GITHUB_ENV"
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fi
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# Set temporary directory (if not already set) to fix https://github.com/cachix/install-nix-action/issues/197
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if [[ -z "${TMPDIR:-}" ]]; then
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echo "TMPDIR=${RUNNER_TEMP}" >> "$GITHUB_ENV"
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fi
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# Close the log message group which was opened above
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echo "::endgroup::"
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21
.forgejo/install-emacs/install.sh
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21
.forgejo/install-emacs/install.sh
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#!/usr/bin/env bash
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# Users should use install-nix-action if they want to customise how Nix is installed.
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set -euo pipefail
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if ! type -p nix &>/dev/null ; then
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env INPUT_EXTRA_NIX_CONFIG= \
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INPUT_INSTALL_OPTIONS= \
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INPUT_INSTALL_URL= \
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INPUT_NIX_PATH="nixpkgs=channel:nixos-unstable" \
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INPUT_ENABLE_KVM=true \
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"$(dirname "$0")"/install-nix.sh
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# Make the installed Nix immediately available here
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source "$GITHUB_ENV"
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while IFS= read -r dir; do PATH="$dir:$PATH"; done < "$GITHUB_PATH"
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fi
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echo "::group::Configuring build cache and installing Emacs"
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nix profile install --accept-flake-config "github:purcell/nix-emacs-ci#emacs-${INPUT_VERSION/./-}"
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echo "::endgroup::"
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