SFrijters/nix-container-demo - Change WNFTZY3MQBNYY2V6XEI2DHZEZGRUMVWK23IN34YW3OISLSJHGFYQC

Optionally prevent relevant nix store paths from being GC'ed

Created by Stefan Frijters on March 24, 2023

WNFTZY3MQBNYY2V6XEI2DHZEZGRUMVWK23IN34YW3OISLSJHGFYQC

Dependencies

In channels

main

Change contents

Deletion in demo-full.sh at line 9 [6.1]

∅:D[4.165] → [5.1:30]

∅:D[7.319] → [5.1:30]

B:BD[8.10] → [5.1:30]

B:BD[5.30] → [7.320:374]

B:BD[7.374] → [4.166:343]

    echo "${BASH_SOURCE[0]}"
    ${shellcheck_cmd} "${BASH_SOURCE[0]}" || return 1
    echo "$(dirname "${BASH_SOURCE[0]}")/bash/nix-container-demo-helper.sh"
    ${shellcheck_cmd} "$(dirname "${BASH_SOURCE[0]}")/bash/nix-container-demo-helper.sh" || return 1

Replacement in demo-full.sh at line 10 [6.1]

B:BD[5.285] → [9.292:374]

    for f in $(find "$(dirname "${BASH_SOURCE[0]}")" -name 'demo*.sh' | sort); do

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    for f in $(find "$(dirname "${BASH_SOURCE[0]}")" -name '*.sh' | sort); do

Deletion in demo-full.sh at line 29 [6.1]

∅:D[3.56] → [10.3:53]

B:BD[5.454] → [10.3:53]

B:BD[10.53] → [3.57:116]

    echo "  -l|--lint: run linter on shell files"
    echo "  -a|--auto: run in automatic mode (no pausing)"

Insertion in demo-full.sh at line 30 [6.1]

[5.579]

    echo "  -a|--auto: run in automatic mode (no pausing)"
    echo "  -g|--gcroots: create Nix garbage collector roots for nix build/run/develop outputs"
    echo "  -l|--lint: run linter on shell files"

Insertion in demo-full.sh at line 37 [6.1]
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```
do_nix_make_gcroots=0
```

Replacement in demo-full.sh at line 41 [6.1]

B:BD[5.648] → [5.648:685]

      -l|--lint)
          do_lint=1

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[5.685]

      -a|--auto)
          do_interactive=0

Replacement in demo-full.sh at line 45 [6.1]

B:BD[5.714] → [5.714:758]

      -a|--auto)
          do_interactive=0

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      -g|--gcroots)
          do_nix_make_gcroots=1

Insertion in demo-full.sh at line 52 [6.1]

[5.841]

          ;;
      -l|--lint)
          do_lint=1
          shift

Replacement in demo-full.sh at line 62 [6.1]

B:BD[5.938] → [5.938:994]

          POSITIONAL_ARGS+=("$1") # save positional arg

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          POSITIONAL_ARGS+=("$1")

Replacement in demo-full.sh at line 71 [6.1]

B:BD[5.1090] → [5.1090:1138]

    LIBDEMO_INTERACTIVE="${do_interactive}" run

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    WRAP_NIX_MAKE_GCROOTS="${do_nix_make_gcroots}" LIBDEMO_INTERACTIVE="${do_interactive}" run

Insertion in bash/nix-container-demo-helper.sh at line 35 [4.368]

[2.503]

[4.2183]

    }
    __nix_make_gcroot() {
        local -r storepath="${1}"
        echo "Preventing GC for '${storepath}'"
        local -r gcroot="/nix/var/nix/gcroots/per-user/${USER}/nix-container-demo-$(basename "${storepath}")"
        rm -f "${gcroot}"
        ln -s "${storepath}" "${gcroot}"
    }
    nix() {
        if [ "${WRAP_NIX_MAKE_GCROOTS:-0}" = 0 ]; then
            command nix "$@"
        else
            local -r action=$1
            shift
            local nix_args=()
            local args=()
            local __encountered_dashes=0
            while [ $# -gt 0 ]; do
                if [ "$1" == "--" ]; then
                    __encountered_dashes=1
                elif [ "${__encountered_dashes}" = 1 ]; then
                    args+=("$1")
                else
                    nix_args+=("$1")
                fi
                shift
            done
            local storepath
            if [ "${action}" = run ]; then
                command nix run "${nix_args[@]}" -- "${args[@]}"
                for storepath in $(command nix build "${nix_args[@]}" --no-link --print-out-paths); do
                    __nix_make_gcroot "${storepath}"
                done
            elif [ "${action}" = build ]; then
                command nix build "${nix_args[@]}"
                for storepath in $(command nix build "${nix_args[@]}" --no-link --print-out-paths); do
                    __nix_make_gcroot "${storepath}"
                done
            elif [ "${action}" = develop ]; then
                # shellcheck disable=SC2016
                storepath="$(command nix develop "${nix_args[0]}" --command bash -c 'echo ${NIX_GCROOT}' 2>/dev/null)"
                __nix_make_gcroot "${storepath}"
                command nix develop "${nix_args[@]}"
            else
                command nix "${action}" "${nix_args[@]}"
            fi
        fi

Replacement in README.md at line 50 [11.3645]

∅:D[3.1893] → [10.581:620]

B:BD[10.581] → [10.581:620]

B:BD[10.620] → [3.1894:1942]

∅:D[3.1942] → [10.655:682]

B:BD[10.655] → [10.655:682]

  -l|--lint: run linter on shell files
  -a|--auto: run in automatic mode (no pausing)
  -h|--help|-?: Show usage

[3.1893]

[10.682]

  -h|--help|-?: Show usage"
  -a|--auto: run in automatic mode (no pausing)"
  -g|--gcroots: create Nix garbage collector roots for nix build/run/develop outputs"
  -l|--lint: run linter on shell files"

Insertion in README.md at line 56 [11.3645]

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⚠ The garbage collector roots are of the form `/nix/var/nix/gcroots/per-user/${USER}/nix-container-demo-*`, you may want to clean them if this demo changes.

Insertion in README.md at line 63 [11.3645]

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* `WRAP_NIX_MAKE_GCROOTS`: enable (1) or disable (0, default) creation of Nix garbage collector roots for nix build/run/develop outputs.

Replacement in .gitlab-ci.yml at line 13 [13.17]

B:BD[13.151] → [14.1104:1145]

    - CLICOLOR_FORCE=1 ./demo-full.sh -a

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[13.151]

    - export USER="$(whoami)"
    - rm -f  /nix/var/nix/gcroots/per-user/${USER}/nix-container-demo-*
    - CLICOLOR_FORCE=1 ./demo-full.sh --auto --gcroots
    - ls -1dtr /nix/var/nix/gcroots/per-user/${USER}/nix-container-demo-*