mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-11-21 13:10:33 +00:00
Add a script to check the number of packages to rebuild after a modification.
svn path=/nixpkgs/trunk/; revision=17731
This commit is contained in:
Nicolas Pierron
parent
1a1a661f4b
commit
342de508d4
260
maintainers/scripts/rebuild-amount.sh
Executable file
260
maintainers/scripts/rebuild-amount.sh
Executable file
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@ -0,0 +1,260 @@
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#!/bin/sh
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usage () {
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echo 1>&2 "
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usage:
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$0
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[--git commit..commit | --git commit]
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[--svn rev:rev | --svn rev]
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[--path path[:path]*]
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[--help]
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This program is used to investigate how any changes inside your nixpkgs
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repository may hurt. With these kind of information you may choose wisely
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where you should commit your changes.
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This program adapts it-self to your versionning system to avoid too much
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effort on your Internet bandwidth. If you need to check more than one
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commits / revisions, you may use the following commands:
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--git remotes/trunk..master
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--svn 17670:17677
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Check the differences between each commit separating the first and the
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last commit.
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--path /etc/nixos/nixpkgs:/tmp/nixpkgs_1:/tmp/nixpkgs_2
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Check the differences between multiple directories containing different
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versions of nixpkgs.
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All these options exist with one commit / revision argument. Such options
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are used to compare your \$NIXPKGS path with the specified version.
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If you omit to mention any other commit / revision, then your \$NIXPKGS path
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is compared with its last update. This command is useful to test code from
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a dirty repository.
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"
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exit 1;
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}
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#####################
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# Process Arguments #
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#####################
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: ${NIXPKGS=/etc/nixos/nixpkgs/}
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vcs=""
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gitCommits=""
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svnRevisions=""
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pathLocations=""
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verbose=false
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argfun=""
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for arg; do
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if test -z "$argfun"; then
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case $arg in
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--git) vcs="git"; argfun="set_gitCommits";;
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--svn) vcs="svn"; argfun="set_svnRevisions";;
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--path) vcs="path"; argfun="set_pathLocations";;
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--verbose) verbose=true;;
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--help) usage;;
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*) usage;;
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esac
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else
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case $argfun in
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set_*)
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var=$(echo $argfun | sed 's,^set_,,')
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eval $var=$arg
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;;
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esac
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argfun=""
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fi
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done
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if $verbose; then
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set -x
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else
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set +x
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fi
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############################
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# Find the repository type #
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############################
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if test -z "$vcs"; then
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if test -x "$NIXPKGS/.git"; then
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if git --git-dir="$NIXPKGS/.git" branch > /dev/null 2>&1; then
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vcs="git"
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gitCommits=$(git --git-dir="$NIXPKGS/.git" log -n 1 --pretty=format:%H 2> /dev/null)
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fi
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elif test -x "$NIXPKGS/.svn"; then
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cd "$NIXPKGS"
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if svn info > /dev/null 2>&1; then
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vcs="svn";
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svnRevisions=$(svn info | sed -n 's,Revision: ,,p')
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fi
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cd -
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else
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usage
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fi
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fi
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###############################
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# Define a storage directory. #
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###############################
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pkgListDir=""
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exitCode=1
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cleanup(){
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test -e "$pkgListDir" && rm -rf "$pkgListDir"
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exit $exitCode;
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}
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trap cleanup EXIT SIGINT SIGQUIT ERR
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pkgListDir=$(mktemp --tmpdir -d rebuild-amount-XXXXXXXX)
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vcsDir="$pkgListDir/.vcs"
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###########################
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# Versionning for Dummies #
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###########################
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path_init() {
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if test "${pathLocations#*:}" = "$pathLocations"; then
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pathLocations="$NIXPKGS:$pathLocations"
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fi
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pathLocations="${pathLocations}:"
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}
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path_getNext() {
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pathLoc="${pathLocations%%:*}"
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pathLocations="${pathLocations#*:}"
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}
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path_setPath() {
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path="$pathLoc"
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}
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path_setName() {
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name=$(echo "$pathLoc" | tr '/' '_')
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}
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################
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# Git Commands #
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################
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git_init() {
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git clone "$NIXPKGS/.git" "$vcsDir" > /dev/null 2>&1
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if echo "gitCommits" | grep -c "\.\." > /dev/null 2>&1; then
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gitCommits=$(git --git-dir="$vcsDir/.git" log --reverse --pretty=format:%H $gitCommits 2> /dev/null)
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else
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pathLocations="$vcsDir:$NIXPKGS"
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vcs="path"
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path_init
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fi
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}
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git_getNext() {
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git --git-dir="$vcsDir/.git" checkout $(echo "$gitCommits" | head -n 1) > /dev/null 2>&1
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gitCommits=$(echo "$gitCommits" | sed '1 d')
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}
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git_setPath() {
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path="$vcsDir"
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}
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git_setName() {
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name=$(git --git-dir="$vcsDir/.git" log -n 1 --pretty=format:%H 2> /dev/null)
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}
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#######################
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# Subversion Commands #
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#######################
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svn_init() {
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cp -r "$NIXPKGS" "$vcsDir" > /dev/null 2>&1
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if echo "svnRevisions" | grep -c ":" > /dev/null 2>&1; then
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svnRevisions=$(seq ${svnRevisions%:*} ${svnRevisions#*:})
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else
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pathLocations="$vcsDir:$NIXPKGS"
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vcs="path"
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path_init
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fi
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}
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svn_getNext() {
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cd "$vcsDir"
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svn checkout $(echo "$svnRevisions" | head -n 1) > /dev/null 2>&1
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cd -
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svnRevisions=$(echo "$svnRevisions" | sed '1 d')
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}
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svn_setPath() {
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path="$vcsDir"
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}
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svn_setName() {
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name=$(svn info 2> /dev/null | sed -n 's,Revision: ,,p')
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}
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####################
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# Logical Commands #
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####################
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init () { ${vcs}_init; }
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getNext () { ${vcs}_getNext; }
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setPath () { ${vcs}_setPath; }
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setName () { ${vcs}_setName; }
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#####################
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# Check for Rebuild #
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#####################
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# Generate the list of all derivations that could be build from a nixpkgs
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# respository. This list of derivation hashes is compared with previous
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# lists and a brief summary is produced on the output.
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compareNames () {
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nb=$(diff -y --suppress-common-lines --speed-large-files "$pkgListDir/$1.drvs" "$pkgListDir/$2.drvs" 2> /dev/null | wc -l)
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echo "$1 -> $2: $nb"
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}
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echo "Please wait, this may take some minutes ..."
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init
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first=""
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oldPrev=""
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prev=""
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curr=""
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while true; do
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getNext
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setPath # set path=...
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setName # set name=...
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curr="$name"
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test -z "$curr" && break || true
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nix-instantiate "$path" > "$pkgListDir/$curr.drvs" > /dev/null 2>&1 || true
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if test -n "$prev"; then
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compareNames "$prev" "$curr"
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else
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echo "Number of package to rebuild:"
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first="$curr"
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fi
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oldPrev="$prev"
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prev="$curr"
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done
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if test "$first" != "$oldPrev"; then
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echo "Number of package to rebuild (first -> last):"
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compareNames "$first" "$curr"
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fi
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exitCode=0
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