75 lines
2.2 KiB
Bash
75 lines
2.2 KiB
Bash
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# This hook ensures that we do the following in post-fixup:
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# * wrap any installed executables with a wrapper that configures TCLLIBPATH
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# * write a setup hook that extends the TCLLIBPATH of any anti-dependencies
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# Add a directory to TCLLIBPATH, provided that it exists
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_addToTclLibPath() {
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local tclPkg="$1"
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if [[ -z "$tclPkg" ]]; then
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return
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fi
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if [[ ! -d "$tclPkg" ]]; then
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>&2 echo "can't add $tclPkg to TCLLIBPATH; that directory doesn't exist"
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exit 1
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fi
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if [[ "$tclPkg" == *" "* ]]; then
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tclPkg="{$tclPkg}"
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fi
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if [[ -z "${TCLLIBPATH-}" ]]; then
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export TCLLIBPATH="$tclPkg"
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else
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if [[ "$TCLLIBPATH" != *"$tclPkg "* && "$TCLLIBPATH" != *"$tclPkg" ]]; then
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export TCLLIBPATH="${TCLLIBPATH} $tclPkg"
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fi
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fi
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}
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# Locate any directory containing an installed pkgIndex file
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findInstalledTclPkgs() {
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local -r newLibDir="${!outputLib}/lib"
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if [[ ! -d "$newLibDir" ]]; then
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>&2 echo "Assuming no loadable tcl packages installed ($newLibDir does not exist)"
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return
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fi
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echo "$(find "$newLibDir" -name pkgIndex.tcl -exec dirname {} \;)"
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}
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# Wrap any freshly-installed binaries and set up their TCLLIBPATH
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wrapTclBins() {
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if [[ -z "${TCLLIBPATH-}" ]]; then
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echo "skipping automatic Tcl binary wrapping (nothing to do)"
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return
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fi
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local -r tclBinsDir="${!outputBin}/bin"
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if [[ ! -d "$tclBinsDir" ]]; then
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echo "No outputBin found, not using any TCLLIBPATH wrapper"
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return
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fi
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find "$tclBinsDir" -type f -executable -print |
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while read -r someBin; do
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echo "Adding TCLLIBPATH wrapper for $someBin"
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wrapProgram "$someBin" --prefix TCLLIBPATH ' ' "$TCLLIBPATH"
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done
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}
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# Generate hook to adjust TCLLIBPATH in anti-dependencies
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writeTclLibPathHook() {
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local -r hookPath="${!outputLib}/nix-support/setup-hook"
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mkdir -p "$(dirname "$hookPath")"
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typeset -f _addToTclLibPath >> "$hookPath"
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local -r tclPkgs=$(findInstalledTclPkgs)
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while IFS= read -r tclPkg; do
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echo "_addToTclLibPath \"$tclPkg\"" >> "$hookPath"
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_addToTclLibPath "$tclPkg" true
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done <<< "$tclPkgs"
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}
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postFixupHooks+=(writeTclLibPathHook)
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postFixupHooks+=(wrapTclBins)
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