From 342de508d41f22485aa42da27314abe14a60000c Mon Sep 17 00:00:00 2001 From: Nicolas Pierron Date: Thu, 8 Oct 2009 19:00:48 +0000 Subject: [PATCH] Add a script to check the number of packages to rebuild after a modification. svn path=/nixpkgs/trunk/; revision=17731 --- maintainers/scripts/rebuild-amount.sh | 260 ++++++++++++++++++++++++++ 1 file changed, 260 insertions(+) create mode 100755 maintainers/scripts/rebuild-amount.sh diff --git a/maintainers/scripts/rebuild-amount.sh b/maintainers/scripts/rebuild-amount.sh new file mode 100755 index 000000000000..ebc5dc3b87ec --- /dev/null +++ b/maintainers/scripts/rebuild-amount.sh @@ -0,0 +1,260 @@ +#!/bin/sh + +usage () { + echo 1>&2 " +usage: + $0 + [--git commit..commit | --git commit] + [--svn rev:rev | --svn rev] + [--path path[:path]*] + [--help] + +This program is used to investigate how any changes inside your nixpkgs +repository may hurt. With these kind of information you may choose wisely +where you should commit your changes. + +This program adapts it-self to your versionning system to avoid too much +effort on your Internet bandwidth. If you need to check more than one +commits / revisions, you may use the following commands: + + --git remotes/trunk..master + --svn 17670:17677 + + Check the differences between each commit separating the first and the + last commit. + + --path /etc/nixos/nixpkgs:/tmp/nixpkgs_1:/tmp/nixpkgs_2 + + Check the differences between multiple directories containing different + versions of nixpkgs. + +All these options exist with one commit / revision argument. Such options +are used to compare your \$NIXPKGS path with the specified version. + +If you omit to mention any other commit / revision, then your \$NIXPKGS path +is compared with its last update. This command is useful to test code from +a dirty repository. + +" + + exit 1; +} + +##################### +# Process Arguments # +##################### + +: ${NIXPKGS=/etc/nixos/nixpkgs/} + +vcs="" +gitCommits="" +svnRevisions="" +pathLocations="" +verbose=false + +argfun="" +for arg; do + if test -z "$argfun"; then + case $arg in + --git) vcs="git"; argfun="set_gitCommits";; + --svn) vcs="svn"; argfun="set_svnRevisions";; + --path) vcs="path"; argfun="set_pathLocations";; + --verbose) verbose=true;; + --help) usage;; + *) usage;; + esac + else + case $argfun in + set_*) + var=$(echo $argfun | sed 's,^set_,,') + eval $var=$arg + ;; + esac + argfun="" + fi +done + +if $verbose; then + set -x +else + set +x +fi + +############################ +# Find the repository type # +############################ + +if test -z "$vcs"; then + if test -x "$NIXPKGS/.git"; then + if git --git-dir="$NIXPKGS/.git" branch > /dev/null 2>&1; then + vcs="git" + gitCommits=$(git --git-dir="$NIXPKGS/.git" log -n 1 --pretty=format:%H 2> /dev/null) + fi + elif test -x "$NIXPKGS/.svn"; then + cd "$NIXPKGS" + if svn info > /dev/null 2>&1; then + vcs="svn"; + svnRevisions=$(svn info | sed -n 's,Revision: ,,p') + fi + cd - + else + usage + fi +fi + +############################### +# Define a storage directory. # +############################### + +pkgListDir="" +exitCode=1 +cleanup(){ + test -e "$pkgListDir" && rm -rf "$pkgListDir" + exit $exitCode; +} + +trap cleanup EXIT SIGINT SIGQUIT ERR + +pkgListDir=$(mktemp --tmpdir -d rebuild-amount-XXXXXXXX) +vcsDir="$pkgListDir/.vcs" + +########################### +# Versionning for Dummies # +########################### + +path_init() { + if test "${pathLocations#*:}" = "$pathLocations"; then + pathLocations="$NIXPKGS:$pathLocations" + fi + pathLocations="${pathLocations}:" +} + +path_getNext() { + pathLoc="${pathLocations%%:*}" + pathLocations="${pathLocations#*:}" +} + +path_setPath() { + path="$pathLoc" +} + +path_setName() { + name=$(echo "$pathLoc" | tr '/' '_') +} + +################ +# Git Commands # +################ + +git_init() { + git clone "$NIXPKGS/.git" "$vcsDir" > /dev/null 2>&1 + if echo "gitCommits" | grep -c "\.\." > /dev/null 2>&1; then + gitCommits=$(git --git-dir="$vcsDir/.git" log --reverse --pretty=format:%H $gitCommits 2> /dev/null) + else + pathLocations="$vcsDir:$NIXPKGS" + vcs="path" + path_init + fi +} + +git_getNext() { + git --git-dir="$vcsDir/.git" checkout $(echo "$gitCommits" | head -n 1) > /dev/null 2>&1 + gitCommits=$(echo "$gitCommits" | sed '1 d') +} + +git_setPath() { + path="$vcsDir" +} + +git_setName() { + name=$(git --git-dir="$vcsDir/.git" log -n 1 --pretty=format:%H 2> /dev/null) +} + +####################### +# Subversion Commands # +####################### + +svn_init() { + cp -r "$NIXPKGS" "$vcsDir" > /dev/null 2>&1 + if echo "svnRevisions" | grep -c ":" > /dev/null 2>&1; then + svnRevisions=$(seq ${svnRevisions%:*} ${svnRevisions#*:}) + else + pathLocations="$vcsDir:$NIXPKGS" + vcs="path" + path_init + fi +} + +svn_getNext() { + cd "$vcsDir" + svn checkout $(echo "$svnRevisions" | head -n 1) > /dev/null 2>&1 + cd - + svnRevisions=$(echo "$svnRevisions" | sed '1 d') +} + +svn_setPath() { + path="$vcsDir" +} + +svn_setName() { + name=$(svn info 2> /dev/null | sed -n 's,Revision: ,,p') +} + +#################### +# Logical Commands # +#################### + +init () { ${vcs}_init; } +getNext () { ${vcs}_getNext; } +setPath () { ${vcs}_setPath; } +setName () { ${vcs}_setName; } + + +##################### +# Check for Rebuild # +##################### + +# Generate the list of all derivations that could be build from a nixpkgs +# respository. This list of derivation hashes is compared with previous +# lists and a brief summary is produced on the output. + +compareNames () { + nb=$(diff -y --suppress-common-lines --speed-large-files "$pkgListDir/$1.drvs" "$pkgListDir/$2.drvs" 2> /dev/null | wc -l) + echo "$1 -> $2: $nb" +} + +echo "Please wait, this may take some minutes ..." + +init +first="" +oldPrev="" + +prev="" +curr="" + +while true; do + getNext + setPath # set path=... + setName # set name=... + curr="$name" + + test -z "$curr" && break || true + + nix-instantiate "$path" > "$pkgListDir/$curr.drvs" > /dev/null 2>&1 || true + + if test -n "$prev"; then + compareNames "$prev" "$curr" + else + echo "Number of package to rebuild:" + first="$curr" + fi + oldPrev="$prev" + prev="$curr" +done + +if test "$first" != "$oldPrev"; then + echo "Number of package to rebuild (first -> last):" + compareNames "$first" "$curr" +fi + +exitCode=0